The following is a brief introduction to the methods of dealing with excessive rape leaves or early bolting, followed by the methods of dealing with excessive rape leaves and the methods of dealing with excessive oil and vegetable rape leaves.
Rape is generally spring rape in northwest China. I don't know the specific growth characteristics, so I won't explain them. The method mentioned here is suitable for rape planted in autumn and winter in southern China.
In winter, there are too many leaves in rape, or it bolting early. Removing some leaves or pinching off flower stems will not harm the growth of rape, but also make rape stems stout and have many side branches.
Excessive growth of leaves is generally caused by excessive nitrogen fertilizer or poor row spacing when planting.
Rapeseed needs more flowers and pods to harvest rapeseed. Long flower bolting belongs to reproductive growth, and leaves belong to vegetative growth. When the vegetative growth is too vigorous, it will inhibit reproductive growth.
Note that it is "too abundant", which means that the number of leaves is more than normal, not that there are no leaves at all.
When picking leaves, only the old yellow leaves near the ground are picked. Don't pick fresh leaves when you see that the whole row of rape has been ventilated and translucent.
Among the removed leaves, the diseased leaves are buried or thrown into special garbage dumps, and the slightly tender leaves can be fed to livestock.
In the past, livestock had little feed, mainly feeding all kinds of old leaves and weeds. Picking old leaves and mowing grass is generally a child's job, and I believe many rural friends still remember it. )
Pinch off the early flowering stems. First, the stems smoked in winter are difficult to pod in frost and snow weather, which affects the annual output in the coming year. Second, only one branch, no side branches, reduces flowering.
Rape bolting is stimulated by reproductive hormones, which will transport more nutrients to the main bolting and no longer send side branches.
Pinch off the early flowering rape heart in order to eliminate the apical advantage of the plant and no longer inhibit the growth of lateral buds.
Plants have the characteristics of light growth and upward growth. Proper removal of vegetable leaves will make the whole rape more exposed to light, which is beneficial to more branches and flowers. Pinch off the stem of early flowering, and the lateral branches will be more and stronger.
You can't pinch broccoli too hard. Generally, it is pinched 5 ~ 10cm from the top of the flower, and different varieties of cauliflower are pinched according to the tenderness of the flower stem.
Rapeseed seedlings are too small to hold flowering plants. Generally speaking, before pinching flowering plants, the flowering plants should be at least 40 cm from the root neck to the head flower.
Don't pinch off the tender leaves of the lateral buds, and don't hurt the lateral buds.
Generally speaking, after beginning of spring, you don't pick broccoli. If the weather is special, you can pinch less
After picking old leaves and pinching cauliflower, it is best to spray a drug to prevent the spread of germs. Whether it is hands or tools, it is possible to spread germs.
It is also necessary to strengthen the management of fertilizer and water, which is conducive to growth and rejuvenation.
For vegetable rape, that is, small vegetables, when the leaves grow too vigorously, there is no need to remove the leaves.
First, this kind of rape originally eats vegetable leaves. When it grows too vigorously, it is necessary to sparse it and selectively pull out some leaves to eat first.
Second, the growth period of this rape is relatively short. Even if there are many old leaves and yellow leaves, the nutrient distribution will be uneven, and the vegetables have been harvested, which has little effect on the yield.
Rape that can be used for cooking as well as cooking is generally a dwarf rape commonly known as "flowering rape" or a rape with a special flower heart. The leaves of this rape grow too vigorously, so we should get rid of the old leaves and yellow leaves.
Too many leaves will affect bolting. See rape for reasons.
This kind of rape mainly eats flower stems, and the time of picking leaves and pinching leaves can be earlier than that of oilseed rape, and the number of times can be more.
This kind of rape needs more fertilizer and water after picking leaves and coring.
There is no uniform standard in agriculture, and every method of crop management should be based on the local water and soil conditions and the climate at that time.