According to 1: climatic conditions, fertilizers are selected and applied. For example, when the weather is dry, rainless, or cold and cold, it will directly affect the exertion of fertilizers; high temperatures and more rain will cause nutrients in fertilizers to be released too quickly and lost due to leaching. Therefore, we should master the application of phosphate fertilizers in autumn and early spring, apply more potassium fertilizer in summer, and apply ammonium nitrogen and nitrate nitrogen in cold seasons.
According to 2: soil conditions, choose and apply fertilizer. In general, the soil nutrient content is low, and the performance of fertilizer and fertilizer is poor, the soil is too acid or alkali, and the soil with low redox potential is targeted with more fertilizer.
According to 3: Fertilizer properties, fertilizers are selected and applied. Such as acidic soil should use alkaline or physiological alkaline fertilizer, alkaline soil should use acidic or physiological acidic fertilizer; ammonium nitrogen fertilizer should be deep-buried; slow fertilizer effect of organic fertilizer or slow-acting fertilizer should be used as base fertilizer, top dressing should choose quick effect Fertilizers and fertilizers should be made of fertilizers that do not affect seed germination.
According to 4: Crop selection and fertilizer application. For example, green vegetables, mulberry tea, and grass crops require more nitrogen; legumes can use less nitrogen because they can fix and supplement nitrogen from the air, but the demand for phosphorus and potassium fertilizers is higher than that of general crops; Tuber crops require more potassium. In addition, fertilizers should also be applied and supplemented at the maximum efficiency period of the crop's nutritional critical period in order to achieve the best yield increase.
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