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The nutrients contained in organic fertilizers are not omnipotent. The organic fertilizers contain more nutrients, which is superior to single fertilizers. However, the nutrients contained in them are not balanced and cannot meet the needs of high yield and quality of crops. When applying organic fertilizer, the fertilizer should be applied according to the nutrient requirements of the crop. Even the farmland producing green food should be applied with appropriate amount of mineral fertilizer, and various foliar fertilizers should be applied during the growth of the crop.
Organic fertilizer decomposes slowly. Fertilizer is slower. Although organic fertilizer contains more nutrients, it has lower nutrient content and slower decomposition in soil. It is difficult to meet crop nutrition when organic fertilizer application is not large. The need for elements. The chemical fertilizer has high nutrient content and rapid fertilizer efficiency, which can be supplemented according to the amount of crop demand, but the fertilizer efficiency period is short. The combination of organic fertilizer and chemical fertilizer, the two complement each other to give full play to their respective advantages, can meet the needs of crops for various nutrients in quantity and time. In order to obtain high yield, a certain amount of fertilizer should be applied.
Organic fertilizers need to be fermented. Many organic fertilizers contain pathogens, eggs and weed seeds. Some organic fertilizers have organic compounds that are not conducive to crop growth. Therefore, they should be fermented and processed before being applied. Go to the ground.
The use of organic fertilizer is contraindicated. The fully decomposed organic fertilizer should not be mixed with alkaline fertilizer. If it is mixed with alkaline fertilizer, it will cause the evaporation of ammonia and reduce the nutrient content of organic fertilizer. Organic fertilizers contain more organic matter and should not be mixed with nitrate nitrogen fertilizer.
Peasant Daily (Li Dagang, Henan Agricultural Vocational College, Zhongmu County, Henan Province)
Organic fertilizers include all substances that can be used as fertilizers except for chemical fertilizers, usually based on human and animal waste, crop straw, and green manure. The organic fertilizer has comprehensive nutrient and long-lasting balanced fertilizer effect. It can not only improve soil structure, improve soil fertility, promote soil nutrient release, but also supply crop nutrients, especially for the development of organic agriculture, green agriculture and pollution-free agriculture. However, there are many types of organic fertilizers, and the functions are different. In the autumn season, the application of organic fertilizers should also be scientific, and avoid blind application. Pay attention to the following points in application:
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