Four principles of rational fertilization
Crop Fertilizer Requirements Cereal crops and leafy vegetables have more nitrogen fertilizer requirements; leguminous crops require more phosphorus and potassium fertilizers; trace elements silicon and sodium are beneficial nutrients for rice and sugar beet, but for most others There is no significant increase in crop yield. Soils with alkaline soils should not use calcium magnesium phosphate fertilizers and phosphate rock powder; viscous heavy soils can be applied with a certain amount of ash such as ash to improve the permeability of the soil. Sandy and heavy soils should be applied to fertilizers in small amounts multiple times to reduce the loss of fertilizers. Applying more organic fertilizer, soil and soil can improve the function of maintaining fertilizer and water. Fertilizer characteristics such as organic fertilizers and slow-acting fertilizers should be used as base fertilizers, and fertilization organic fertilizers that have no effect on seed sprouting should be selected as the seed fertilizer. Fertilizers that are easily decomposed and volatile nutrients should be applied to cover soil to reduce nutrient losses and improve fertilizer efficiency. The amount of rainfall and the temperature of the meteorological conditions directly affect the effect of fertilization. For example, unfavorable fertilization can play a role in weather drought, and too much rain in fertilization can easily result in the loss of fertilizer. High temperatures and moderate rainfall are favorable for the accelerated decomposition of organic fertilizers. Moderate organic fertilizers and available fertilizers are suitable for use in low-temperature, low-rain conditions.
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