Rape to apply boron and zinc fertilizer
Boron and potassium are trace elements in crop nutrients, and the amount of boron fertilizer can increase with the increase of N, P, and K fertilizers. For large-scale production of rapeseed crops, its yield increase effect is significant, but zinc fertilizer has not been reported for rapeseed production. According to the test results, the amount of boron applied in rapeseed 2 kg/mu yields up to 170 kg. Second, The output of boron and zinc fertilizers can reach 167kg; the yield of 1.5kg of boron and 2kg/mu of applied zinc are the same, both being 166kg. 1kg of boron applied is higher than 1.5kg of zinc. Zinc has the lowest output of 2.5kg. The application of boron in rapeseed has a significant effect on yield increase. It is appropriate to apply boron at 2kg/mu. Therefore, on the basis of the same application of N, P, and K fertilizers in the experiment, the use of boron, zinc micro-fertilizer and N, P, and K fertilizers provided the basis for balance. The application of rapeseed N, P, K fertilizers with proper boron and zinc fertilizers: 1. Live: Mushi base fertilizer N, P, K with urea 20kg, superphosphate 40kg, potassium chloride 16kg, mixed application of borax content in 11% applied 2kg; sulfuric acid content in 19% applied 2kg is appropriate. Zinc fertilizer. Mixed application with boron fertilizer has certain interaction effect on rapeseed production. 2. Seedlings: seedbed thin sowing, seedling cultivation with soil transplanting field. Autumn sowing is usually planted after September 20th. Transplanted before October 20, row spacing 4m, plant spacing 2m, single plant per litter. It is advisable to plant around 8000-13000 mu. Phosphorus, potassium, boron and zinc fertilizers are used as base fertilizers, and the top dressing is 10-15kg/mu. Opening period or convulsing period 20--25kg/mu. 3. Seedling period: According to relevant data, the absorption of boron and zinc in rape is highest at the flowering and maturing stages, and can be sprayed at the seedling, flood or early flowering stage with 0.1%--0.25%, 1- 2 times to prevent Flowering does not happen, promoting steady growth, and at the same time, the production of boron and zinc is higher. The accumulation of zinc in the rapeseed and seedling stages accounted for about 30% of the total growth period, and 40% of the total flowering and maturation period. The use of boron and zinc fertilizer in rapeseed could resist or reduce the occurrence of Sclerotinia. China Agricultural Network Editor