Organic fertilizer is mostly used as a base fertilizer, and spring fertilization is mainly based on spring sowing or spring transplanting. Therefore, it is more important to apply organic fertilizer rationally. The following points should be noted when preparing organic fertilizers for fertilizers and applications: Before the fertilization, it must be piled. The nutrients in decomposed organic fertilizers are mostly ineffective, and they are difficult to be directly absorbed and utilized by crops. They must be transformed into effective states through microbial decomposition during the decomposed process. Organic fertilizers contain harmful bacteria, eggs, and grass seeds. Decomposition of the fermented high temperature. Many growers will put organic fertilizers in advance and put them back into storage before use. They will be reused every other year. This is a successful experience and should be promoted. It varies from crop to crop. Have a good grasp of the amount of fertilizer organic fertilizer and fertilizer have their own strengths and weaknesses, both with the application. Taking into account the rationality and possibility, the amount of fertilizer to be used varies from crop to crop. Promote the application of organic fertilizer on field crops, generally 1,000 to 3,000 kilograms of organic fertilizer applied to the Mushi; organic fertilizers must be applied to fruit trees and vegetables, of which fruit trees and open-field vegetables are generally 3,000 to 4,000 kilograms, greenhouses and other protective vegetables are generally 4000 to 7,000. kg. The amount of fertilization here mainly refers to ordinary heaps of manure and manure. For example, the amount of livestock manure should be appropriately reduced or even halved. Correctly deal with the relationship between commodity organic fertilizer and farmyard manure. Commodity organic fertilizers are mostly animal-plant wastes that are rich in organic matter and have been produced after fermentation. They have reached the industry standard of NY525-2002. As a commodity for sale, their quality is superior to that of ordinary farmyard fertilizers. In the application method, it is mainly used as basal fertilizer, and the application rate per acre is 200-500 kilograms; generally it is not advocated as top dressing, if the amount of top dressing is applied, it should be appropriately reduced, and appropriate amount of fertilizer should be applied. Due to the small amount of application, the organic matter returned to the soil is quite limited. Commercial organic fertilizers cannot be used continuously for long-term instead of farmyard fertilizers, and at least once every 3 to 5 years. Correctly consider the relationship between organic fertilizers and organic foods. The main difference between organic fertilizer and chemical fertilizer is that: organic fertilizer has comprehensive nutrition, nutrient distribution is more reasonable than natural, and release is slow, generally it will not lead to imbalance of nutrient supply; while fertilizer has relatively single nutrient, and nutrient release is fast, it is difficult for general producers to completely control scientifically. The amount, ratio, and release rate of nutrients are likely to cause product quality degradation and environmental pollution due to excessive fertilization or imbalance in nutrient supply. Therefore, organic food regulations can only apply organic fertilizer, and it is reasonable to prohibit the use of chemical fertilizers. However, improper use of organic fertilizers can also cause food safety and environmental pollution problems, especially when organic fertilizers contain polluting elements or harmful substances and excessive application. Therefore, the application of only organic fertilizer is not necessarily a safe food, but it is not necessarily an organic food.
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