Organic-inorganic compound fertilizers refer to compound fertilizers containing organic matter and inorganic nutrients. Most organic materials use processed organic fertilizers (such as livestock and poultry manure, straw, etc.), as well as substances containing organic matter (peat, weathered coal, humic acids, etc.), and some also include microbial agents and substances that stimulate growth; inorganic nutrition Some are mainly chemical fertilizers.

The efficiency of the organic fraction is not very high. The organic fraction of most organic-inorganic compound fertilizers is currently around 50%. If 50% of the total amount is 200 kilograms, the amount of organic material applied is only 100 kilograms. Many tests have shown that only 1500 kilograms of organic fertilizer can be applied per acre. It can be seen that organic fertilizers applied with organic-inorganic compound fertilizers have a limited fertilizer effect.

The role of microbial agents will not have many microorganisms that are active under certain circumstances and have relatively high environmental requirements. Most chemical fertilizers are salts, which have high solubility and can kill or inhibit microorganisms.

Fertilizer effect is mainly inorganic fertilizer The organic-inorganic compound fertilizer is a variety of compound fertilizer. For most crops, applying 100 kg of compound fertilizer with a ratio of N, P, and K of 10:6:9 per mu can meet the need of high-yield production. At this time, there are only 50 kilograms of organic matter per mu. It can be imagined that if there is no effect of inorganic fertilisers in fertilizers, the amount of organic fractions will have no effect. Therefore, when applying organic-inorganic compound fertilizers, first of all pay attention to the nutrient content and proportion in the fertilizer, taking into account the price and the application effect.

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