How can fertilizer burn be prevented in rapeseed cultivation?
How can fertilizer burn be prevented in rapeseed? Please explain the methods. To prevent fertilizer burn in rapeseed, you can refer to the following 4 methods (for reference): 1. Use the layered application or full-layer deep application method: according to the planned crop rotation for the year and the total amount of fertilizer, apply it all at once during deep plowing, adopt formula fertilization technology, and master the three elements of nitrogen, phosphorus, and potassium...
How can fertilizer burn be prevented in rapeseed? Please explain the methodsTo prevent fertilizer burn in rapeseed, you can refer to the following 4 methods (for reference):
1. Use the layered application or full-layer deep application method: according to the planned crop rotation for the year and the total amount of fertilizer, apply it all at once during deep plowing, adopt formula fertilization technology, and master the formula of the three elements of nitrogen, phosphorus, and potassium as well as trace elements. After application, determine whether to water according to the degree of soil dryness and moisture. Generally, the soil should be kept moist so that the fertilizer fully decomposes. Never sow or transplant immediately after dry application.
II. Apply chemical fertilizers scientifically: the annual fertilizer amount per mu of rapeseed field is 25 kg of ammonium bicarbonate, 15 kg of ammonium sulfate, and 10 kg of urea. When applying, the weather, soil, seedling condition, and the physical and chemical properties of the chemical fertilizer must be considered, and it should be managed according to local conditions so that it can both fully exert fertilizer efficiency and save costs, while effectively preventing fertilizer burn. Where conditions permit, reduce the amount of chemical fertilizer as much as possible, and advocate the application of controlled-release fertilizers, coated fertilizers, silicate bacteria biological potassium fertilizer, etc.
III. Advocate the mixed application of biological fertilizers and chemical fertilizers: in rapeseed fields where chemical fertilizers have been applied for a long time in production, soil microorganisms decrease, which can also cause blocked decomposition of organic matter, not only making nutrients easy to lose, but also reducing their utilization rate. Therefore, mixing biological fertilizers and chemical fertilizers can improve soil that has long been treated with chemical fertilizers. It not only makes up for the shortcoming of insufficient nitrogen content in biological fertilizers, but also prevents the loss of chemical fertilizers. In rapeseed fields, 50-80 kg of biological fertilizer can be applied per mu in holes.
IV. Apply foliar fertilizer: when applying Huimanfeng foliar fertilizer, the dosage per mu is 250-500 ml, and diluting it to a 400-600 times solution gives a better effect.
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