Nitration-inhibiting slow-release compound fertilizer for dual purposes of basal application and topdressing

A slow-release compound fertilizer and nitrification inhibition technology, which is applied in urea compound fertilizer, fertilization equipment, application, etc., can solve problems such as low fertilizer utilization rate, groundwater pollution, and soil nitrate accumulation, so as to improve labor productivity and reduce nitric acid Salt content, the effect of reducing the loss of nitrogen in farmland
CN109456100APending Publication Date: 2019-03-12HEBEI AGRICULTURAL UNIV. +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
HEBEI AGRICULTURAL UNIV.
Publication Date
2019-03-12

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Abstract

The invention discloses a nitration-inhibiting slow-release compound fertilizer for dual purposes of basal application and topdressing. Components of the compound fertilizer comprise dicyandiamide, urea, potassium sulfate, ammonium Polyphosphate and an auxiliary material, wherein the dicyandiamide accounts for 2.2-3.7% of a total weight of the compound fertilizer, a weight proportion of nitrogen,phosphorus and potassium nutrients is (15-25):(6-10):(18-26), and calculated by a weight percentage, total content of the nitrogen-phosphorus-potassium nutrients is not lower than 40% of the total weight of the compound fertilizer. The compound fertilizer is capable of delaying conversion from ammoniacal nitrogen in soil to nitric nitrogen through using combined application of a nitrification inhibitor and a nitrogen fertilizer, remarkably reducing loss of farmland nitrogen, and effectively improving vegetable yield and quality, and has an ecological protection value.
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Description

technical field

[0001] The invention relates to the technical field of agricultural chemical fertilizers, in particular to a functional nitrification inhibiting slow-release compound fertilizer. Background technique

[0002] With the continuous improvement of the living standards of urban and rural residents, residents' demand for vegetables continues to increase. As a high-input, high-output production system, facility vegetables have become the agricultural pillar industry in many regions of my country. In 2014, the area of ​​protected vegetables in Hebei Province reached 1.37 million hectares, and will increase by 400,000 mu per year. The management mode of extensive fertilization and irrigation of facility vegetables will not only lead to low fertilizer utilization efficiency, but also cause the accumulation of nitrate content in the soil, causing environmental pollution problems such as groundwater pollution. Therefore, finding the best fertilization method to reduce t...

Claims

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