As soon as I got home, I soaked mung beans in water for four hours according to the method taught by that person. When mung beans began to get fat, I found an empty plate, spread them neatly, and then covered them with a wet towel, and my mung beans were planted.
Looking at this plate of mung beans, I wonder if they will really grow bean sprouts tomorrow? I am looking forward to it!
Saturday, June 3, 2009 will be sunny.
I couldn't wait to see my bean sprouts as soon as I got up this morning.
I really don't know when I look at it. I was shocked at first sight. Most of my mung beans have begun to sprout and take root, about 3 mm long. How amazing! It's really the same as what my science book says. It germinates and takes root first, no matter where the root grows, it will grow below.
I also found that the roots of some soaked mung beans are obviously longer than those of beans that have not been soaked in water, about 7 mm long. Mung beans have undergone earth-shaking changes in just one night. Seeing that they grew so well and were thirsty, I watered them.
Well, I really hope my mung beans can grow up quickly and grow into bean sprouts as soon as possible.
Sunday, October 4th, 2009/KLOC-0 will be sunny.
"Wow!" I let out a scream when I went to see mung beans this morning.
I found that the roots of mung beans are all one centimeter long. When I opened the wet towel covered with mung beans, the roots of some beans actually bypassed the gap in the towel. I thought they were going to die. Unexpectedly, my mother said to me, "The roots of these beans are already so long, and now they need soil to tie them down." Now, they regard this towel as dirt and want to take root and repair themselves. "As soon as I heard it, I understood that they wrapped their roots in towels and would not die, but to grow better. So, I immediately went downstairs and took a handful of soil and spread it on the beans.
Looking at mung beans covered with mud quilts, I sincerely feel: "Little mung beans are so cute, grow up quickly!" "
Today, the teacher assigned a very special assignment-planting mung beans. After returning home, I took a transparent plastic box, poured some water, and then put mung beans in it. Seeing these round and green mung beans crowded together, they began to absorb the surrounding water and breathe fresh air. I am happy to say to them, "Mung bean, Mung bean, sprout quickly and grow up quickly." In order to let mung beans grow freely, I put this box of hopeful seeds on the windowsill and said to them, "grow up, grow up, and I will come to see you again in a few days."
65438+1It will be fine on Tuesday, October 5th.
Today, the weather is fine, and the sun shines on the window sill, which is particularly bright. I found that the bean sprouts in the plastic box have grown to several centimeters long, and many thin small roots have grown on the roots. They are like tentacles that reach into the water to absorb nutrients to the maximum extent. There are two green leaves on it, as sharp as a pair of scissors, which shows its vigorous vitality. Two watercress tightly embrace the green leaves, like a mother caring for her children.
The bean sprouts in the box all grow vigorously and look lovely. I noticed that the bean sprouts in the box were all purple. I asked my grandfather, "Why are the bean sprouts sold in the market white and I planted them in purple?" Grandpa said: "Because we put the transparent box on the windowsill, bean sprouts absorb the sunlight during their growth, so they are definitely different from those grown in buckets without sunlight."
From this observation, I learned about the growth process of bean sprouts and learned real knowledge.
This year, in order to strive for a green school, our school launched a scientific and technological practice activity with the theme of raising flowers, and called on all students to actively sign up for this scientific and technological practice activity. Speaking of planting flowers, I like playing with some flowers and plants since I was a child, and I always can't put it down. So I'm so happy to hear that the school is going to carry out such activities this time! I was the first in my class to sign up, perhaps influenced by me, and many students in my class also signed up for this activity. Later, I was assigned to the same group with six other students in my class. Under the leadership of Mr. Shen, the instructor of our group, everyone happily started the activity of raising flowers. Time flies, more than five months have passed in a blink of an eye. The teacher said that our exploration and practice activities should also come to an end. Let's recall the research process and harvest. Then I will report to you some research and gains of my group of students in flower cultivation activities in the form of diary!
On Monday, June 4, 2007, it was sunny.
Preparation before planting flowers
"I can finally grow flowers!" I muttered to myself: it's been almost a week since I received the notice from the school. Teacher Shen finally called us to have a meeting! At noon, Mr. Shen called our classmates to the laboratory and said that there would be a meeting to arrange the related matters of flower cultivation. When we arrived at the laboratory, Mr. Shen had been waiting for us there for a long time. He told us, "our flower cultivation activities should be combined with the study of science class." We once learned the unit "Plant Life" in the third grade. After class, everyone came to plant flowers, learn science by hand and experience the magical power of plant life. As long as you study hard, work hard with Qixin and persevere, I believe you will gain something. After listening to teacher Shen's inspiring words, I made up my mind: I must plant flowers successfully this time!
Teacher Shen also told us that the school is buying flowers these days, and it is estimated that it will take a few days to really plant flowers. He also discussed with us what should be prepared before planting flowers. Finally, each of us is required to prepare a large flowerpot and watering tools (which can be made by ourselves), collect some small loose dry mud and take it to school with plastic bags. As soon as the meeting was over, the students in our group were ready to leave separately.
On Monday, June 1 1, the weather was fine.
Sunflower sowing
A week passed quickly. After lunch today, Mr. Shen came to tell us: I have bought the flower seeds, take what you have prepared and come to the lab quickly! Hearing the news, we panted three steps and ran to the laboratory one step at a time. Teacher Shen also told us that the scientific name of the flower to be planted in our group is sunflower, Scutellaria barbata and Portulaca oleracea. If you want to know more, you can search online yourself. As he spoke, he carefully took out a sunflower seed much smaller than rapeseed from a small transparent plastic bag and gave it to each of us 10. "Wow, it's so small!" Everyone shouted out with one voice. "Yes, although small, these flowers are imported from abroad and the price is very expensive!" Teacher Shen said, "So you should take care of her more carefully!" "
Under the leadership of Mr. Shen, our group of students first went to the canteen to find some cinders to spread at the bottom of the flowerpot, and then put loose dry mud on the cinders. Some students didn't bring enough fine mud, so Mr. Shen asked them to knock the mud with bricks before putting it away. There can be no carelessness! Add about 12 cm of fine dry mud. Teacher Shen said that before sowing, sprinkle some water to soak the soil thoroughly, and the seeds should be evenly spaced. We sprinkle water first, then spread sunflower seeds evenly on the wet mud, and then cover the seeds with a thin layer of fine dry mud. There is a label on the side of the flowerpot, which reads: plant name, sowing time, sower, school. Finally, we put the flowerpot under the window sill where we can get the sun.
Finally finished, everyone looked at each other. Some students had sweat on their foreheads, and some made a big face, which made everyone laugh! Although I feel a little tired, especially the work of digging mud is the hardest, but several male students are happy to help us. So we are still very excited, and we all hope that the sunflower seeds we planted will germinate early. "You can go back and come to see it every day. If the mud on it is dry, sprinkle some water." Teacher Shen said. I didn't look back at my flowerpot when I left.
It will be cloudy on Monday, June 18.
Sunflowers are sprouting!
From the second day of sowing, every day at noon, we will come to the window of the laboratory to see if the pot of seeds we planted has sprouted.
One day has passed.
Two days have passed.
……
A few days have passed in a blink of an eye, and every time I always go with hope and return disappointed. "Could I have watered these seeds too much and killed them?" "Mine may be dry?" "Maybe the seeds can't germinate at all?" ..... Everyone crowded into Mr. Shen's office noisily and asked endlessly. "These seeds should be no problem. We bought it from a regular flower company! The first two assumptions are possible ... In short, don't worry, wait patiently for a few days. " Under the comfort of teacher Shen, we had to reluctantly leave the office.
"sprout! Germinated! " At noon the day before yesterday, a classmate of our group, Chu Di's crying woke me and several other students. We hurried to see it, only to find three green seedlings in the middle of his flowerpot. The two leaflets on each tree are green and enviable under the sunlight. Look at several other students and my flowerpot. It has been eight days since sowing, and the flowerpot is still so bare, which makes people sad. We asked Mr. Shen again. Mr. Shen looked at it carefully and said, maybe the soil layer covered on his pot of seeds is thin. Students' pots may be watered too much, and the holes of watering tools are too big, which has washed mud out of small holes! After hearing this, I thought to myself: I blame myself for being afraid of the seeds dying, and I secretly sprinkled some fine mud on them the next day after sowing. What a worry!
Two days later, at noon today, I saw that the seeds I planted also sprouted, and suddenly eight trees jumped out of the soil! I was thinking: maybe the soil layer I paved is the smoothest? This time, my mind finally paid off. Teacher Shen also praised me for my good work. I am so happy! I measured the length of the flower seedlings with a triangular ruler, and the highest one was 0.5 cm. Unfortunately, the seeds of two students did not germinate. Teacher Shen said, "If it doesn't germinate in two days, it's estimated that it won't germinate, otherwise it's necessary to wait for the germinated buds to grow up and divide them from other students' pots." Everyone should help each other! "Ling Wenyi, will you?" I was really reluctant at that time, but I hesitated when I thought that the teacher said that students should help each other, but I readily agreed. Miss Shen smiled and nodded at me.
It turned sunny to cloudy on Monday, June 25th.
Research and management of flower seedling stage
As time goes by, the sunflowers we planted are also growing day by day. Unfortunately, the teacher gave me the seeds of 10, and only eight seedlings were drilled. The teacher asked me to give four to a classmate who didn't germinate (maybe there was too much water), and only four were left, so I cherished them even more and regarded them as my darling. From the day of germination, Mr. Shen asked us to record the height of flower seedlings in time, measure the height change once a week until the first bud appeared, and draw the growth height change of sunflower into a line chart. The teacher asked us to analyze the picture. From the figure, we find that during the two months from germination to the appearance of the first bud, the height growth changes first quickly and then slowly. After discussing and searching for information, the students in our group finally knew the reason: originally, the water and nutrients absorbed by the sun flower from its roots at the beginning of germination were used for its growth and height through photosynthesis, but in the vigorous period, it began to accumulate nutrient buds, so its growth began to slow down. By searching information on the Internet, we also know some scientific common sense, such as the life habits of sunflowers:
"The scientific name of sunflower is Scutellaria barbata, alias Peony, Paeonia lactiflora, Portulaca grandiflora and Sunflower, and the common name is' Immortality'. It is an annual herbaceous flower of Portulaceae and Portulaca. Plant height 10cm ~ 15cm, creeping, juicy and sparse. Leaves alternate or scattered, about 2.5 cm long, fleshy and rod-shaped. Flowers are solitary or clustered at the top of branches, each branch has 1 to 4 flowers, the diameter of a single flower is about 2.5 to 4 cm, and it is single or double. The colors are white, yellow, red, pink, purple and orange, and there are many complex colors and variegated colors; Sunflowers are native to South America, Brazil and other places, and are cultivated all over China. Warm but not cold-tolerant, it is a strong positive plant. The cultivation site must be well-lit and bloom at noon on sunny days. At other times, when the light is weak, the flowers are often closed or not fully open. In recent years, full-time flowering varieties have been cultivated, and there is no requirement for sunshine. Drought resistance, shelter from rain and waterlogging, and lax requirements on soil, while loose and fertile sandy soil with smooth drainage is the best. Strong adaptability, can broadcast and copy by itself. Moderate water and fertilizer, no special requirements; It can be propagated by sowing or cutting. In mid-April, the temperature should be above 20℃. The seedbed should be sandy loam, the soil preparation should be fine and flat, and watered. After the water has completely penetrated for two hours, fill the depressions and cracks with fine soil first, and then spread a thin layer of fine soil evenly on the bed. After water is soaked in fine soil, sunflower seeds should be evenly mixed with several times of fine sand and covered with soil to make the seeds invisible. Don't water after sowing. When it is dry and windy, you can cover it with reed curtain or film to keep warm and moist. Generally, it takes 7 days to 10 days to emerge. When the seedlings grow to 3 cm to 4 cm high, divide the exposed roots into seedlings for planting. The plant row spacing is 10 cm× 10 cm, and it will bloom in about 2 months. Large seedlings can also be transplanted with bare roots. Cutting propagation, in the growth period, young branches can be picked at any time, cut in the open field or flowerpot, and bloom soon after survival; Potted sunflowers can be planted with old pot soil with high humus content. After sun disinfection, add semi-sandy loam and a small amount of decomposed organic fertilizer. The whole growing season should be placed in a sunny place. Pot soil should not be wet for a long time, but should be wet and dry. Generally, fertilization is not required. " (Note: The above information comes from the Internet)
Knowing so much information, I was thinking: No wonder Mr. Shen told us to let it bask in the sun, not to water it too much, but to water it "if you don't do it, water it thoroughly"! It turns out that there is scientific reason here.
Monday, July 9, is cloudy.
When the summer vacation arrived, the teacher asked us to move the sunflower home to continue to strengthen management and independent research, and report the "latest progress" to the teacher by telephone in time. At home, in addition to strictly following the teacher's instructions and materials, I have to look at the balcony several times a day. When it rains, I quickly take it into my room, because the teacher said that sunflowers are most afraid of rain. Once I visited my uncle's house, I didn't forget to tell my father when I left temporarily that if the soil was dry, I would help me water the flower seedlings. Under my careful care, the four sunflowers in my flowerpot have now become lush and lush.
It will be sunny on Monday, August 6th.
Ah, what a beautiful sunflower!
This morning, the first thing I did after getting up was to go to the balcony to see the sunflowers I planted. "ah? Flowers and bones! It is true. " I saw a big pink flower between the thickest fleshy little stick-shaped green leaf and the axil of the stem. (See the picture on the left) Several Kobanawa bones also appeared at the top of several green branches nearby.
I quickly told the news to Mr. Shen by phone. The teacher said it was called a bud, and it would bloom in a day or two. Let me take a camera to shoot it. I was so excited after listening to it! I called my father and asked him to take a picture of the flower. I was eager for it to bloom immediately. That night, I lay in bed, closed my eyes and prayed silently, as if there was a sea of colorful flowers in front of me. ...
It will be sunny on Thursday, August 9th.
"open it! It's open! Wen Wen, come and see! " This morning, I was still sleeping in, and I was awakened by my father's phone call. I jumped out of bed and ran to the balcony. Yesterday's big bud has turned into a red sun flower, shining in the sun. I pestered my father to take another picture of him. Look, this is a good shot, right?
Monday in August 13 is cloudy.
The first flower has been in bloom for four days, and eight or nine colorful flowers have appeared in my flowerpot. Oh, no, to be exact, there should be four colors: pink, orange, milky white and erythema pink. It's like coming to a colorful little garden!
……
Saturday, August 18 is sunny.
Every day after that, I will go to see those beautiful flowers. After a long time, I discovered a secret: these flowers are still bud-shaped when they wake up in the morning, and they all bloom in a few minutes after the sun shines! When the sun is blocked or set by clouds, they all start to close again. I was thinking, maybe that's why it's also called sunflower. I told this idea to Mr. Shen, who praised me for using my brain and studying problems by myself, a bit like a little scientist! Hearing this, I feel like eating honey, sweet. I like studying more, and I am thinking, why do sun flowers bloom when there is sun and close when there is no sun? The teacher said, study this problem yourself! I looked through a lot of books and searched online for a long time, but I still couldn't find the answer, but I wasn't discouraged. I secretly decided that I must study this problem in my future study. Teacher Shen said, I am waiting for your research and answer!
I remember once, our family went out to play for a week, and no one watered the sunflower flowers. Due to the hot weather in summer vacation, when I got home, I saw that the soil in the flowerpot had cracked and some flowers and leaves had withered. I am sad. I watered the flowers with a glimmer of hope. I didn't expect those flowers to come back to life a few days later. I was so happy. After reading the information, I realized that sunflower has strong vitality and can resist drought. No wonder it also has a common name "can't die"!
It will be sunny on Monday, September 3rd.
How time flies! School started again in a blink of an eye. Everyone takes their sunflowers to school. Wow! How well their flowers bloom! Teacher Shen took many photos of these flowers and discussed with us to give each photo a nice name!
Look, the hard work of teachers and students finally won the flowers' smile:
Flowers will bloom even if they don't.
Chaotian trumpet
Snow White
Some people like it hot.
A unique performance
Some people like it hot.
It's a pity that the sunflowers of two students in our group died. Teacher Shen asked the reason. It is estimated that one is that he watered the flowers too much, and the other is that he forgot to collect them during the thunderstorm. The teacher said that although our sunflowers can resist drought, they are most afraid of being flooded by heavy rains and floods, and their roots will rot and die.
Monday, September 17 will be fine.
Sunflowers bear seeds!
Every day in the future, we will see the sun flowers blooming constantly, and the flowerpot is already a scene of flowers. Some flowers have begun to fade slowly after four or five days of flowering, some bear small fruits after withering, and some have no fruit after withering. What is the reason? We asked Mr. Shen, and the teacher said that sun flowers can be divided into male and female, and only pollinated female flowers can bear fruit. I see! These fruits are green at first, then slowly turn yellow after five or six days, and then turn brown after about ten days. On September 15, I picked the first ripe fruit in the flowerpot. When I touched the shell, it cracked. There are some black seeds in it, seven or eight times smaller than rapeseed. I carefully collected them and put them on a piece of white paper. How much! There are about thirty or forty seeds in a fruit. After a few days, there are more and more ripe fruits. Some fruits were ripe and I forgot to collect them. They will split themselves and scatter the seeds in the flowerpot.
165438+1October1May It was cloudy on Thursday.
The sunflower we planted has a really long flowering period. They begin to blossom in early August. A batch of flowers withered, and another batch blossomed in two or three days. Until now, it's almost 1 1 mid-to-late month. There are still some flowers blooming after frost in my flowerpot. Now I have collected a lot of seeds. I want to dry them and keep them well. I also plan to give some of them to my friends, family, relatives and teachers. Next spring, I want to plant more beautiful sunflowers with my parents and decorate my home more beautifully. With my classmates and teachers, decorate our campus into a beautiful big garden!
2007128 October
Comments:
The little author devoted himself to this scientific and technological practice activity with the theme of cultivating flowers on campus with full enthusiasm. I truly recorded my group's research in the form of a diary. Between the lines are the true feelings of the author's love for flowers, which is really touching after reading it.
In short, the whole scientific practice of flower cultivation has made children go through a process of planting, cultivating, protecting and collecting flowers. As Mr. Lao She said, there are joys and sorrows, smiles and tears, flowers and fruits, and fragrant colors, which require both labor and long knowledge. Let them truly appreciate the fun of growing flowers and help them gradually develop behaviors and habits of caring for flowers and plants and cherishing the environment; By observing the growth process of sunflower, they have deepened their scientific knowledge and understanding of plant life, and also let them experience the process of exploring plant life independently like scientists, and realize the value of life from it; While appreciating and feeling the beauty of flowers, they are also influenced by beauty; In the cooperation and exchange activities of the group, the organic combination of scientific inquiry and humanistic artistry was realized. Through the research of this topic, we finally achieved an educational effect of "moistening things silently".
A little too much. ...