(1) Apply fertilization according to soil, climate and crop uptake patterns. Different soils have different acids, alkalis, fertilizers, and leans. The ability to supply fertilizers varies greatly. The ability of crops to absorb nutrients is also different. Therefore, the application of chemical fertilizers should be based on the local soil, climate, crop yield, crop mouthwash, fertilizer effect, Fertilizer Utilization Formulate a specific fertilization plan to determine a reasonable amount.
(2) Apply with organic fertilizers. Because organic fertilizers are characterized by slow, steady, long-term nutrient allotment, and chemical fertilizers are characterized by fast, fierce, short, and nutrient-rich fertilizers, and they can be used in conjunction with each other. There is also a stamina to balance the supply of crop nutrients. The use of organic fertilizers and chemical fertilizers in combination can enhance the activity of soil microorganisms, promote the further decomposition of organic fertilizers, release a large amount of carbon dioxide and organic acids, and help to dissolve the insoluble nutrients in the soil and provide for the absorption and utilization of crops. The results of the National Chemical Fertilizer Test Network show that organic manure and inorganic fertilizers have the best effect in increasing production, and are higher than pure chemical fertilizers.
(3) Rational application of nitrogen, phosphorus and potassium. The absorption of various nutrient elements by crops is regularly absorbed in a certain proportion. Various nutrient elements have specific effects and cannot be replaced, but they can promote each other. For example, nitrogen fertilizer can promote the absorption of phosphorus. Potash fertilizer can increase the fertilizer efficiency of phosphate fertilizer and at the same time promote the absorption and utilization of nitrogen by crops. Nitrogen, phosphorus and potassium fertilizers can be used in conjunction with the application effect, greatly increasing the use of fertilizer.
(4) Apply trace element fertilizer according to local conditions. The amount of trace elements absorbed by plants is limited, but it cannot be lacking. The lack of a certain trace element in plants will cause obstacles in vegetative growth and reproductive growth, and even the death of immature seedlings. The lack of trace elements is closely related to soil supply and crop absorption and utilization. The amount of trace elements provided by different soils is different, and the absorption of trace elements by different crops is also different. Therefore, the application of trace elements must be targeted. Improper use of some trace elements can also harm plants.
(5) Determine a reasonable fertilization method. Fertilizers generally have high nutrient concentrations, high water solubility, and are easily lost. Therefore, the amount of fertilization should not be excessive. Excessive fertilization is not only uneconomical, but also can easily lead to lodging and production loss. Nitrogen fertilizer should pay attention to deep application to reduce the loss of nitrogen volatilization. Nitrogen fertilization should also be based on the status of the soil to control the sub-fertilizer, do not directly contact the seeds, shoots and leaves to prevent burning seed, burning seedlings. Phosphorus fertilizers are easily fixed in the soil, have little mobility, and have long aftereffects. Therefore, the application of phosphate fertilizer is generally done as a base fertilizer, as far as possible concentrated application to the roots of the crop, do not spread. Potash fertilizer is generally used as a base fertilizer, and there is also a small amount of top dressing or foliar fertilizer. Trace element fertilizer can be used as base fertilizer, seed fertilizer, and fertilizer. Use methods include spraying, dipping, mixing, acupuncture, spreading, dipping and other methods.
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