Long-acting and quick-acting combined special compound fertilizer for fruits and vegetables in South China

Abstract

The invention discloses long-acting and quick-acting combined special compound fertilizer for fruits and vegetables in South China. The long-acting and quick-acting combined special compound fertilizer is prepared from, by weight, 7.0-7.5 parts of nitrate nitrogen, 7.5-8.0 parts of ammonium nitrogen, 7 parts of P2O5 and 21 parts of K2O. 2-chlorine-6-nitrapyrin serves as nitrification inhibitor, and the additive amount of 2-chlorine-6-nitrapyrin accounts for 0.5% to 1.0% of ammonium nitrogen. The nitrification inhibitor is used for prolonging the fertilizer efficiency of ammonium nitrogen, a nitrate nitrogen source is mixed and added, the needs of the fruits and vegetables for nitrogen nutrition of different forms can be met, yield increasing and quality improving are achieved, long acting and quick acting can be combined, the nitrogen use efficiency can be improved, and nitrate elution can be reduced. The long-acting and quick-acting combined special compound fertilizer is suitable for South China and other areas with high rainfall capacity, can be used as base fertilizer, can also be applied for topdressing, and has high economic, social and ecological benefits.

Description

technical field [0001] The invention relates to a special compound fertilizer for fruits and vegetables, in particular to a special compound fertilizer for fruits and vegetables in South China combining long-acting and quick-acting. Background technique [0002] South China is an important area for the production and export of vegetables in my country. In addition to meeting domestic demand, it also shoulders the important task of transporting vegetables from south to north, earning foreign exchange through export, and supplying Hong Kong, Macao and Taiwan. Fruit vegetables are one of the most important types of vegetables because of their high benefits and large planting area. It has a long growth period, requires a large amount of fertilizer, and has the characteristics of coexistence and competition between reproductive growth and vegetative growth during most of the growth period, and requires a high level of nitrogen fertilizer management. [0003] Nitrate nitrogen fer...

AI Technical Summary

Problems solved by technology

However, the rainfall in South China is heavy, and the nitrate nitrogen in the fertilizer is easily lost by leaching; moreover, the soil of the vegetable field in South China is mostly weakly acidic, and a large amount of ammonium nitrogen will also be converted into nitrate nitrogen through nitrification, which cannot stabilize long lasting effect

When encountering continuous rainfall, if vegetable growers apply a large amount of fertilizer before the rainfall, the high-concentration nitrogen fertilizer will cause the risk of burning seedlings in the early stage of growth, and a large part of nitrogen fertilizer will be washed out by rainwater and lost to the environment, and it may be lost in the later stage of growth. It leads to the phenomenon of unbalanced vegetative growth and reproductive growth, and after continuous replanting, it will lead to soil nutrient enrichment, serious physiological diseases of fruits and vegetables, and environmental problems such as groundwater pollution; Ultimately delay fruit ripening or reduce yield, these have seriously restricted the healthy and sustainable development of the local vegetable industry

[0004] However, there is currently a lack of special compound fertilizers in the market that are suitable for rainy regions in South China, can effectively provide two forms of nitrogen nutrition at the same time, and can meet the long-acting and quick-acting nitrogen requirements of fruits and vegetables

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