After the spring, the rapeseed enters the vigorous growth period of vegetative growth and reproductive growth, and needs to absorb a large amount of nutrients. It should be based on soil quality, climate and fertilization before spring, combined with seedling science and fertilization.
Early application of spring fertilizer and early application of spring fertilizer can promote the growth of pre-winter growth of rapeseed with more branches and early buds. In the rapeseed field where the base fertilizer is insufficiently applied and the fertilizer is not applied, early application of spring fertilizer is the key to capturing high yield. Generally, it is applied to the diluted manure water with 15-20 kg of ammonium bicarbonate or 6-7 kg of urea per acre.
The skillful application of the 薹 薹 薹 是 is the key period for the rapeseed spring to take the shelf. At this time, the amount of fertilizer needed is relatively large, accounting for about 50% of the total fertilizer. Insufficient application of base fertilizer and wax fertilizer, field with weak seedlings and poor growth potential should be applied early and re-applied with fertilizer. When the height is 3~5 cm, 750-1000 kg of human excrement per acre, 4-5 kg ​​of urea or carbonated 20 kg of ammonium hydroxide was added with water. The manure that is too strong in the field of seedlings should be applied slowly and lightly.
The phenomenon of "flowers and not real" in the application of boron fertilizer can be caused by boron deficiency. The application of boron fertilizer can prevent this phenomenon, and the hybrid rape should be applied with boron fertilizer. Spray the boron fertilizer once in the flood season and the initial flowering stage, use 50-100 grams of borax per acre, spray with hot water and add 50-60 kg of water. It is preferable to apply a boron fertilizer having a good solubility such as a quick boron.
Applying the appropriate amount of flower fertilizer to supplement the flower fertilizer can make the rapeseed more firm, increase grain and gain weight. When the height is 50-60 cm, choose a windless sunny afternoon to spray the flower fertilizer. The field with a long potential difference can be mixed with 300 g of urea per acre in a potassium dihydrogen phosphate solution.
Increasing the application of potassium fertilizer and increasing potassium fertilizer can enhance the resistance of rape plants to lodging, disease resistance, cold resistance and water stain resistance. In the potassium-deficient soil, sandy land, and hybrid rice field, the application of potassium fertilizer in spring increased the yield significantly. Generally, potassium fertilizer is applied from late February to early March, and 150-200 kg of grass ash or 15 kg of potassium chloride is applied per mu.
Source: Farmers Daily Author: Heli Wu
Early application of spring fertilizer and early application of spring fertilizer can promote the growth of pre-winter growth of rapeseed with more branches and early buds. In the rapeseed field where the base fertilizer is insufficiently applied and the fertilizer is not applied, early application of spring fertilizer is the key to capturing high yield. Generally, it is applied to the diluted manure water with 15-20 kg of ammonium bicarbonate or 6-7 kg of urea per acre.
The skillful application of the 薹 薹 薹 是 is the key period for the rapeseed spring to take the shelf. At this time, the amount of fertilizer needed is relatively large, accounting for about 50% of the total fertilizer. Insufficient application of base fertilizer and wax fertilizer, field with weak seedlings and poor growth potential should be applied early and re-applied with fertilizer. When the height is 3~5 cm, 750-1000 kg of human excrement per acre, 4-5 kg ​​of urea or carbonated 20 kg of ammonium hydroxide was added with water. The manure that is too strong in the field of seedlings should be applied slowly and lightly.
The phenomenon of "flowers and not real" in the application of boron fertilizer can be caused by boron deficiency. The application of boron fertilizer can prevent this phenomenon, and the hybrid rape should be applied with boron fertilizer. Spray the boron fertilizer once in the flood season and the initial flowering stage, use 50-100 grams of borax per acre, spray with hot water and add 50-60 kg of water. It is preferable to apply a boron fertilizer having a good solubility such as a quick boron.
Applying the appropriate amount of flower fertilizer to supplement the flower fertilizer can make the rapeseed more firm, increase grain and gain weight. When the height is 50-60 cm, choose a windless sunny afternoon to spray the flower fertilizer. The field with a long potential difference can be mixed with 300 g of urea per acre in a potassium dihydrogen phosphate solution.
Increasing the application of potassium fertilizer and increasing potassium fertilizer can enhance the resistance of rape plants to lodging, disease resistance, cold resistance and water stain resistance. In the potassium-deficient soil, sandy land, and hybrid rice field, the application of potassium fertilizer in spring increased the yield significantly. Generally, potassium fertilizer is applied from late February to early March, and 150-200 kg of grass ash or 15 kg of potassium chloride is applied per mu.
Source: Farmers Daily Author: Heli Wu
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