Slow-release agent of functional nitrogenous fertilizer

Abstract

The invention disclose a slow-release agent of a functional nitrogenous fertilizer, comprising the following components by weight: 2-5 parts of synergistic sodium, 130-150 parts of dicyandiamide, 140-160 parts of magnesium sulfate, 140-160 parts of nano-carbonate calcium, 280-320 parts of zeolite powder and 250-270 parts of amargosite. The invention can not only maintain long effect and slow effect of the nitrogenous fertilizer, but also can ensure quick effect of the nitrogenous fertilizer, so that crops can be supplied with enough nitrogenous balance during the whole growth period. The invention can be randomly mixed and fertilized with the nitrogenous fertilizer; the dosage is reduced by 20%-30% compared with the normal dosage of conventional fertilizing so as to be convenient for farmers, save labor and cost and increase yield.

Description

technical field [0001] The invention relates to the field of agricultural biology, in particular to a functional nitrogen fertilizer slow-release agent. Background technique [0002] There are many kinds of nitrogen fertilizers, such as urea, ammonium bicarbonate, ammonium sulfate, ammonium chloride, ammonium nitrate, etc., which have made great contributions to the agricultural production of New China. However, due to the long-term excessive application of nitrogen fertilizer, it also has a huge negative impact on the environment. For example, the nitrogen dioxide produced by urea in the process of amide hydrolysis, nitrification and denitrification loses a lot with the volatilization of ammonia gas, and escapes into the atmosphere to produce a greenhouse effect, which is closely related to global warming; In the deep layer, the nitrate in rivers and groundwater seriously exceeds the standard, threatening human health. It is urgent to reduce nitrogen fertilizer applicatio...

AI Technical Summary

Problems solved by technology

[0007] Any of the above methods has the possibility of improving nitrogen fertilizer use efficiency, but many unsatisfactory aspects have been shown in the demonstration and application of field crops, such as sulfur coating, polymer coating, calcium magnesium phosphate fertilizer wrapped slow-release fertilizer, In the field application, it generally appears that the late stage is vigorous, and the early stage is lack of nutrition, so it still needs to be dealt with accordingly.