Spring fertilization is mainly based on spring sowing and spring transplanting crops, while organic fertilizers are mostly used as base fertilizers and are indispensable for application. Therefore, it is important to apply organic fertilizers rationally. However, the following points must be noted when preparing fertilizers and applying them:
Organic fertilizers and chemical fertilizers are used in conjunction with the application of organic fertilizers and chemical fertilizers. Each has its own advantages and disadvantages. 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 to field crops, generally 1,000-3,000 kg of organic fertilizer applied in the MUS; for fruit trees and vegetables, organic fertilizer must be applied, in which fruit trees and open field vegetables are generally 3000-4000 kg, greenhouses and other protective vegetables are generally 4000-7000. 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.
Before the application of organic fertilizer, the nutrients in the decomposed organic fertilizer must be ineffective and difficult to be directly absorbed and utilized by the crop. It must be transformed into a viable state through microbial decomposition during the decomposed process. The organic fertilizer contains various harmful bacteria and insects. Eggs and grass seeds must be killed by the high temperature of the fermented fermentation. 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.
Correctly deal with the relationship between commodity organic fertilizer and farmyard manure The commodity organic manure is mostly animal-plant waste that is rich in organic matter. It is obtained after fermentation and meets the industry standard of NY525-2002. As a commodity for sale, its quality is superior to that of general farmyard manure. In the application method, it is mainly used as base fertilizer, and the application amount per mu is 200-500 kilograms; generally it is not advocated as topdressing, if the top dressing application amount should be appropriately reduced, and appropriate quantitative fertilizer is applied. Due to the small amount of organic matter returned to the soil, 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 farmyard manure should be applied at least once every 3-5 years.
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