Organic fertilizer is an important source of fertilizer in agricultural production. It has a comprehensive nutrient and a balanced and long-lasting fertilizer effect. It can not only improve the soil structure, improve soil fertility, and promote the release of soil nutrients, but also can supply and improve crop nutrition. It has irreplaceable chemical fertilizers. The superiority is of great significance to the development of organic agriculture, green agriculture and pollution-free agriculture. However, organic fertilizers have many different types of raw materials and vary in their properties. Therefore, organic fertilizers should be applied scientifically in autumn and winter, and should not be blindly applied. In the application should pay special attention to the following points:
First, organic fertilizer contains more nutrients, but it is not balanced and can not fully meet the different needs of various crops on nutrients. Organic fertilizers contain many types of nutrients, which is an advantage compared to single nutrient fertilizers. However, its nutrient content is low, there is also a problem of supply imbalance, and it cannot meet the needs of crops for high yield, high quality, and increased income. In the application of organic fertilizers, chemical fertilizers should be formulated according to the requirements of crops on nutrients so that balanced fertilization can be achieved. Even if the farmland that produces green foods is to be equipped with mineral fertilizers, various types of foliar fertilizers are sprayed during the growth of the crops according to actual conditions. Ensure the normal growth and development of crops.
Second, organic fertilizer fertilizer effect is slow. Organic fertilizer not only has a low total nutrient content but also has a slow fertilizer effect. It is difficult to meet the needs of crops for nutrient elements when the amount of organic fertilizer is not large. Therefore, in order to utilize the advantages of high nutrient content in fertilizers and rapid fertilizer efficiency, organic fertilizers are applied in combination with chemical fertilizers to balance the strengths and weaknesses of each other, and to exert their advantages in blending to meet the demand for various nutrients in quantity and time during the growth and development of crops. .
Third, the organic fertilizer needs to be fermented. Many organic fertilizers contain germs, eggs, and weed seeds. Some organic fertilizers contain organic compounds that are not conducive to crop growth. Therefore, all organic fertilizers should be applied after stacking, fermentation, and processing.
4. There are differences in the composition and nature of the organic fertilizer raw materials, so that after the soil is applied to the soil, the effects on the soil and crops are also different. Therefore, according to the texture and climate of the planting soil, the growth habits of the planted crops, and the characteristics of the fertilizer needed, appropriate organic fertilizers should be selected for rational fertilization. For example, human urine contains a large amount of chloride ions, which should be avoided for chlorine-free crops.
Fifth, the application of organic fertilizer is not as good as possible. Organic fertilizers are bulky and contain low levels of nutrients. They need to be applied in large quantities to meet the growing needs of the crop, but not as much as possible. Because organic fertilizers, like chemical fertilizers, there are also problems with metered application in agricultural production. If the amount of organic fertilizer is too much, it is not only a waste, but it can also cause soil barriers and affect the growth and development of crops. For example, if a large amount of organic fertilizer is applied for a long time in protected land cultivation, it may lead to an excess of nutrients in soil and salinization of soil, which may cause problems such as poor growth of agricultural products, excessive nitrate content, and deterioration of quality. Therefore, the application amount of organic fertilizers in production should be rationally used according to the consumption of various nutrients and organic matter in the soil, so that formula fertilization and scientific fertilization can be achieved.
Six, organic fertilizer application method is appropriate. Organic manure should be applied with ditching or digging pits for centralized fertilization and timely covering with soil after application; if applied, it should be turned into soil after application. Generally, organic fertilizers and chemical fertilizers are mixed and applied. The effect is better. Such as superphosphate and organic fertilizer, can greatly improve fertilizer efficiency.
7. The decomposed organic fertilizer should not be mixed with alkaline fertilizers. If it is mixed with alkaline fertilizers, it will cause the volatilization of ammonia and reduce the efficiency of organic fertilizers.
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