Excessive application of organic fertilizer crops is also victimized

Organic fertilizer can significantly improve the soil, improve product quality, reduce crop pests and other advantages, unlike chemical fertilizers, it is easy to damage roots and dead seedlings, but it can not be said that the more organic fertilizers are applied, the better.

In fact, excessive application of organic fertilizer will also cause the same harm as excessive application of chemical fertilizer. It is characterized by difficulty in water absorption at the root of the crop, and it is prone to pathogenesis such as burnt root yellow leaves, short dead seedlings, and leaf deformity. The serious consequence is that the crop gradually shrinks and dies. The main factor is the excessive application of organic fertilizer, resulting in water shortage in the soil, imbalance of feeding, so that the nitrate ions in the soil accumulate, and the nitrate content exceeds the standard, thus causing crop damage. How to avoid excessive application of organic fertilizer? It is recommended to control the application rate of organic fertilizer according to the crop “four types of one” formula percentage fertilization method, and also pay attention to the following matters:

First, strictly follow the formula to apply. Promote the scientific and technological knowledge that organic fertilizers are beneficial to the growth of crops, rationally combine biological fertilizers with farm organic fertilizers, mineral fertilizers and chemical fertilizers, adhere to the “four types of one” formula to balance fertilization techniques, and guide fertilization according to the nutrient requirements of crop growth period. Practice has proved that: the best ratio of biological fertilizer 1-2%, organic fertilizer 50-60%, medium and trace element fertilizer 10-20%, NPK large amount element fertilizer 30-40%, the yield increase effect can be significantly improved 20-30%. It can be seen that the rational application of bio-organic bacterial fertilizer is an inevitable trend in the development of modern organic agriculture.

Second, fully fermented and fermented before application. Organic bio-fertilizer can activate soil, improve soil, enhance crop disease resistance, insect resistance and resilience, and improve crop quality and yield. However, organic fertilizers such as poultry pens, human and animal manure, and cakes in nature must be fully fermented and fermented before application. After fermentation, the first is to balance the acidity of the organic fertilizer, reduce the nitrate content, supplement the water, and is beneficial to the combination of microbial bacteria in the soil of the natural world; second, it can kill the parasite eggs in the original manure after fermentation, and is harmful. Pathogens and hazards brought directly by crops and soils such as biological pathogens.

Third, try to apply as a base fertilizer after deep tillage. To improve the fertilization method, firstly, the organic fertilizer should be applied or covered into the soil as much as possible to avoid the phenomenon of fertilizer application on the surface, reduce the waste of waste and environmental pollution. Second, the base fertilizer of the crop seedlings should be applied deep or early, especially strict. Control the application rate of nitrogen fertilizer in crop seedlings; the third is to apply fertilizer according to the law of crop growth and nutrient demand. The short crops in general growth period can be used as one-time application of base fertilizer, such as cotton cultivation and fertilization in long growing period, which should be applied in the early and late stages. That is, "light before, after heavy" to rationally apply, in order to achieve the expected target yield effect.

Fourth, with the application of bio-organic fertilizer. In the actual production, the lack of organic matter in the soil is likely to cause crop diseases and low yield. The application of organic fertilizer can not only improve crop yield and quality, but also make crops resistant to drought, premature aging and pests and diseases. In particular, the combination of organic fertilizer and biological bacterial fertilizer can make the soil have better functions of nitrogen fixation, phosphorus dissolving and potassium dissolving, and can improve soil utilization, increase fertilizer utilization rate, save cost, increase yield and increase income.

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