Sweet elephant grass is a perennial herb of Pennisetum.
The plant is tall, generally 2~4m high, and the highest can reach more than 5m.
The root system is developed, distributed in the soil layer of about 40cm, and the deepest part can reach 4 m.
The leaves are smooth, the fluff is particularly small, the stems are crisp, the taste is sweet and delicious, and the palatability is better than that of Pennisetum.
Growth characteristics and planting yield of sweet elephant grass: Sweet elephant grass likes warm and humid climate, and is a high-yield forage grass widely planted in tropical and subtropical regions.
It can resist light frost for a short time and overwinter safely at MINUS 3 degrees in winter.
The growth starts at 10~ 14℃, and grows rapidly at 25~35℃, with high temperature tolerance, but not cold tolerance. In the range of 8~ 10℃, the growth was inhibited and stopped when it was below 5℃.
It can naturally overwinter in Guangdong, Guangxi, Fujian, Hunan, Jiangxi, Yunnan, Guizhou, Taiwan Province and other places, and can be used for a long time. It can grow from mid-February to 65438+February, and it grows most vigorously from April to September, and it slows down after 165438+ 10. The tropical regions of Guangdong and Guangxi can be harvested all year round.
Sweet elephant grass sweet elephant grass stems are clustered, erect, thick and tillering.
When the plant is mature, several branches can be extended from the middle and upper leaf sheaths.
High yield, good quality, sweet taste, and good effect of green feeding of cattle, sheep and fish. It can harvest 6-8 crops a year, and the yield of fresh grass per mu is more than 0/5 of kloc-,and the height can reach more than 20 tons. After planting for one year, it can be harvested continuously for 8- 10 years.
In the production of sweet elephant grass, stems are used for asexual propagation, and the seed setting rate and seed germination rate are low, and the seedling growth is particularly slow, so it is cultivated with seed stems like sugarcane.
The choice of soil is not strict, and sandy soil, clay and slightly acidic soil can be planted.
However, loam with deep soil layer and fertile and loose soil is the most suitable.
I like chemical fertilizer and am particularly sensitive to nitrogen fertilizer.
Because the root system is developed, it has strong drought tolerance.
High-yield forage grass-sweet elephant grass cultivation techniques: 1. Soil preparation and fertilization: select the plot with convenient irrigation and drainage, deep soil layer and loose and fertile land, with the tillage depth of 20cm and the application of organic fertilizer of 22500~37500kg per hectare.
Sweet elephant grass has a long growth period, many mowing times, high yield and higher requirements for fertilizer than ordinary grass.
2. Planting method: When the average temperature reaches 65,438+03 ~ 65,438+04℃, the stem can be used for propagation. For example, in February in Guangxi, March in Changsha, and April in Baoding, stem segments that grow more than 100d and are free of plant diseases and insect pests are selected as seed stems, cut into 3-4 segments, buried in 2-3 segments, and obliquely inserted.
It can also be planted in holes, the hole depth is 15~20cm, the stem is obliquely inserted, and each hole is 1~2 knots, with about 3000 buds per mu. Generally, seedlings can emerge in 10 day after sowing, and tillering begins in 15~20 days.
Sweet elephant grass high-yield forage festival: 3. Field management: after planting sweet elephant grass, it should be irrigated in time to ensure the soil is moist.
Seedling growth is slow, so intertillage and weeding should be done in time.
After each mowing, intertillage weeding and topdressing should be carried out in time.
In areas with warm climate and abundant rainfall, sweet elephant grass can be harvested and used in the same year of planting.
Generally, the plant height is 100~ 120cm, and it is about 10~20cm above the ground.
Grass can be mowed every 20 ~ 30 days in peak season 1 time.
Sweet elephant grass is a kind of tall stalk forage grass, and its stem is easy to age. After mowing, the cellulose increases and the quality decreases, so we should pay attention to mowing at the right time.
There will be a gap in the yield of sweet elephant grass under different planting environments. We will continue to update the knowledge about the cultivation of sweet weevil and other grasses. If you want to know more about forage planting, you can continue to pay attention to the seed gang.
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