The bud stage is an important stage in the transformation of rapeseed vegetative growth to reproductive growth, requiring a large amount of fertilizer. During this period, if the nutrient supply is sufficient, the main stems and branches of rapeseed grow thick, the green leaves increase, the leaves are large, and the cockroaches can grow taller, which is the key to setting up a high-yield shelf. However, the rapeseed manure can not be applied to a single nitrogen fertilizer. It is necessary to combine the application of potassium fertilizer and foliar application of boron fertilizer to increase branching, pod growth and grain growth. This is because the rapeseed is deficient in potassium at the seedling stage, and generally does not show symptoms. Once it enters the flood season, the plant is tall and grows fast. If the soil contains low potassium, it will make the potassium nutrient ratio of rapeseed imbalance, and it will grow well before convulsions. After the yellow phlegm phenomenon. Therefore, in the rapeseed fields containing potassium fertilizers such as pig manure and ash fertilizer, the potassium chloride should be applied 5 to 7.5 kg per mu in the spring. This has a good effect on promoting the stout of rapeseed stalks and enhancing cold resistance, lodging resistance and disease resistance.
The application of rapeseed scented flower fertilizer must also look at the growth of rapeseed and determine the application period and dosage. For rapeseed with good wintering and normal growth, when the height is 10~16 cm, 5 kg of urea per acre or 15-20 kg of ammonium bicarbonate, or 500~750 kg of human excrement. For the rapeseed that has grown too much, it is necessary to delay the application period of the manure and reduce the amount of fertilizer used. Otherwise, the rapeseed will grow wild, the field will be closed, and the disease will increase. For rapeseed with poor growth, it should be applied early and reapplied. If the height is 10 cm, it can be 5~7.5 kg of urea or 20~25 kg of ammonium bicarbonate. For example, in the early flowering stage, the color of the leaves is weak, and the stamina is insufficient. It can also be combined with cultivating loose soil and cultivating the pupa, and seeing the seedlings to apply appropriate amount of flowers and fertilizer to promote balance. In the initial flowering stage of rapeseed, 0.2%~0.3% potassium dihydrogen phosphate solution should be sprayed on the foliage.
Spraying boron fertilizer is an effective measure to prevent "flowers and not real", so as to increase the effective pod formation rate, generally increase the yield by 2 to 30%, especially the red soil is generally deficient in boron, and the cabbage-type rapeseed is more sensitive to boron. Must pay attention to the application of boron fertilizer. In addition to spraying at the seedling stage, it should be sprayed 1 or 2 times during the Shengyu and Shenghua periods. 100 grams of borax per acre, warm water, 50 kg of water, sprayed on a sunny afternoon.
Supplementation of phosphate fertilizer can promote early maturity and increase the seed setting rate and oil content. In the flowering period, the application of phosphate fertilizer can be carried out by means of root dressing. It is usually sprayed once at the initial flowering stage and the final flowering stage. Spray 2% superphosphate solution or combined with potassium supplementation 0.3% potassium dihydrogen phosphate solution, spray 2 times, interval 5~7 days.
In the growth period of rapeseed buds, it is necessary to prevent prosperousness in a timely manner. When the leaves of the rapeseed are drooping, the tissue is tender, and the nutrient excess and the resistance are weakened, the field where the rapeseed grows too much must be chemically regulated, which can be used in convulsions. Period, using 15% paclobutrazol 50g per acre, 75kg spray with water, can play the role of controlling high and thickening, controlling and strengthening, and promote the steady growth of rapeseed, making Wangchangtian into a high-yield rape field.
The application of rapeseed scented flower fertilizer must also look at the growth of rapeseed and determine the application period and dosage. For rapeseed with good wintering and normal growth, when the height is 10~16 cm, 5 kg of urea per acre or 15-20 kg of ammonium bicarbonate, or 500~750 kg of human excrement. For the rapeseed that has grown too much, it is necessary to delay the application period of the manure and reduce the amount of fertilizer used. Otherwise, the rapeseed will grow wild, the field will be closed, and the disease will increase. For rapeseed with poor growth, it should be applied early and reapplied. If the height is 10 cm, it can be 5~7.5 kg of urea or 20~25 kg of ammonium bicarbonate. For example, in the early flowering stage, the color of the leaves is weak, and the stamina is insufficient. It can also be combined with cultivating loose soil and cultivating the pupa, and seeing the seedlings to apply appropriate amount of flowers and fertilizer to promote balance. In the initial flowering stage of rapeseed, 0.2%~0.3% potassium dihydrogen phosphate solution should be sprayed on the foliage.
Spraying boron fertilizer is an effective measure to prevent "flowers and not real", so as to increase the effective pod formation rate, generally increase the yield by 2 to 30%, especially the red soil is generally deficient in boron, and the cabbage-type rapeseed is more sensitive to boron. Must pay attention to the application of boron fertilizer. In addition to spraying at the seedling stage, it should be sprayed 1 or 2 times during the Shengyu and Shenghua periods. 100 grams of borax per acre, warm water, 50 kg of water, sprayed on a sunny afternoon.
Supplementation of phosphate fertilizer can promote early maturity and increase the seed setting rate and oil content. In the flowering period, the application of phosphate fertilizer can be carried out by means of root dressing. It is usually sprayed once at the initial flowering stage and the final flowering stage. Spray 2% superphosphate solution or combined with potassium supplementation 0.3% potassium dihydrogen phosphate solution, spray 2 times, interval 5~7 days.
In the growth period of rapeseed buds, it is necessary to prevent prosperousness in a timely manner. When the leaves of the rapeseed are drooping, the tissue is tender, and the nutrient excess and the resistance are weakened, the field where the rapeseed grows too much must be chemically regulated, which can be used in convulsions. Period, using 15% paclobutrazol 50g per acre, 75kg spray with water, can play the role of controlling high and thickening, controlling and strengthening, and promote the steady growth of rapeseed, making Wangchangtian into a high-yield rape field.
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