Early application of spring fertilizer or insufficient rapeseed field, the application of spring fertilizer is the key to high yield, generally 7 to 10 kg of urea.
It is a 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 requirement. The application of base fertilizer and wax fertilizer is weak, and the field with poor potential should be applied early, and the fertilizer should be applied again. When the height is 3~5 cm, the application of urea is 12.5-15 kg per mu plus 15 kg of potassium fertilizer or ternary compound fertilizer 30. ~35 kg. The seedlings that have been overwhelmed by the seedlings should be applied slowly and slowly.
The phenomenon of "flowers and not real" in the application of boron fertilizer is caused by boron deficiency. The hybrid double-low rape requires a large amount of boron, and the sensitivity to boron should pay more attention to the application of boron fertilizer. The quick-acting boron fertilizer is sprayed once in the flood season and the initial flowering period.
Replenishing flower-fermented rapeseed is an infinite inflorescence. Appropriate amount of supplemental application of flower fertilizer can make rapeseed more horny, reduce the number of negative angles at the end of the inflorescence, 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.
Source: Agricultural Science and Technology News
It is a 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 requirement. The application of base fertilizer and wax fertilizer is weak, and the field with poor potential should be applied early, and the fertilizer should be applied again. When the height is 3~5 cm, the application of urea is 12.5-15 kg per mu plus 15 kg of potassium fertilizer or ternary compound fertilizer 30. ~35 kg. The seedlings that have been overwhelmed by the seedlings should be applied slowly and slowly.
The phenomenon of "flowers and not real" in the application of boron fertilizer is caused by boron deficiency. The hybrid double-low rape requires a large amount of boron, and the sensitivity to boron should pay more attention to the application of boron fertilizer. The quick-acting boron fertilizer is sprayed once in the flood season and the initial flowering period.
Replenishing flower-fermented rapeseed is an infinite inflorescence. Appropriate amount of supplemental application of flower fertilizer can make rapeseed more horny, reduce the number of negative angles at the end of the inflorescence, 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.
Source: Agricultural Science and Technology News
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