Ecological fertilization method based on nitrogen-saving high paddy rice yield and non-point source emission reduction

A fertilization method and rice technology, applied in fertilization methods, fertilization devices, applications, etc., can solve the needs of sustainable development of environmentally friendly farmland ecosystems, only consider short-term benefits, and disorderly fertilizer application. The effect of reducing the risk of eutrophication and groundwater nitrate pollution, promoting and applying high value, and improving the utilization rate of nitrogen fertilizer
CN102440109AInactive Publication Date: 2012-05-09ZHEJIANG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
ZHEJIANG UNIV
Publication Date
2012-05-09
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses an ecological fertilization method based on nitrogen-saving high paddy rice yield and non-point source emission reduction, which includes the following steps: (1) determining target paddy rice yield Y(kg hm-2); (2) acquiring the potential nitrogen nutrient supply capability INS(kg hm-2) of soil: an N fertilizer-lacking fertilization area and a conventional fertilization area are established in advance; and the accumulated amount of the nitrogen of the overground part of paddy rice of the N fertilizer-lacking fertilization area is equal to INS; (3) measuring and calculating the amount RNR(kg hm-2) of demanded N nutrient under the target paddy rice yield: RNR is equal to Y multiplied by CGN plus (TB minus Y) multiplied by MCNS; (4) estimating the amount (FR, kg hm-2) of nitrogen fertilizer to be applied: FR is equal to (RNR minus INS) divided by (REN multiplied by NC); (5) dynamically regulating the amount of applied nitrogen fertilizer. Compared with the conventional fertilization management mode of farmers, the ecological fertilization mode based on the nitrogen-saving high yield and the non-point source emission reduction has the characteristics of accurate quantification, convenience in operation, low cost, high popularization and application value and the like.
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Description

technical field

[0001] The invention relates to the optimal fertilization management of nitrogen fertilizer in rice production, specifically an ecological fertilization method based on rice nitrogen-saving high-yield and non-point source emission reduction, belonging to the field of agricultural non-point source pollution control and environmental protection. Background technique

[0002] my country is the country with the largest consumption of chemical fertilizer nitrogen in the world, and its nitrogen fertilizer consumption accounts for 30% of the world's total nitrogen fertilizer consumption, while rice nitrogen fertilizer consumption accounts for 37% of the world's total rice nitrogen fertilizer consumption. At present, excessive nitrogen application and unbalanced fertilization are common in rice production in my country. Excessive input of nitrogen fertilizer and unreasonable application have resulted in low utilization rate of nitrogen fertilizer, resulting in a large...

Claims

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