A method for synergistically turning over chemical fertilizers and green manure in yellow mud fields of early rice

By using the new milk vetch variety 'Min Zi No. 8' in combination with chemical fertilizers to tamp the rice paddies, the problems of long tamp time and high CO2 emissions in rice paddies in Fujian Province were solved. This achieved efficient fertilizer utilization and greenhouse gas emission reduction in yellow mud fields of early rice, and improved rice yield and quality.

CN116472832BActive Publication Date: 2025-10-03INST OF SOIL & FERTILIZER FUJIAN ACADEMY OF AGRI SCI
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Patent Information

Application Number
CN202310180657.X
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-03-01
Publication Date
2025-10-03
Estimated Expiration
2043-03-01

AI Technical Summary

Technical Problem

The existing astragalus tillage pressing technology in rice fields in Fujian Province has problems such as long tillage time, large CO2 and CH4 emissions, and low fertilizer utilization efficiency. In addition, the spatial variation of fertility between fields is large, making it difficult to standardize the tillage amount and time.

Method used

The method of synergistically turning over the new Chinese milk vetch variety 'Min Zi No. 8' and chemical fertilizers was adopted, combined with the forward movement of base fertilizer and turning over of green manure under flooding conditions, to shorten the turning over time, increase the time for CO2 absorption and utilization, reduce the amount of chemical fertilizers, and optimize the turning over amount and time.

Benefits of technology

It shortens the turning time, reduces CO2 and CH4 emissions, improves the efficiency of fertilizer utilization, meets the demand for large spatial variation in fertility among fields, and achieves the coordinated development of high-yield and high-quality rice and greenhouse gas emission reduction.

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Abstract

The present invention provides a method for cooperatively turning over chemical fertilizers and green manures in yellow mud fields of early rice. The method specifically discloses the concept of cooperatively turning over early rice base fertilizers and Chinese milk vetch under flooding conditions, which accelerates the decomposition rate of the Chinese milk vetch and greatly shortens the turning over time of the Chinese milk vetch, thereby increasing the time for the Chinese milk vetch to absorb and utilize CO2 in the air, shortening the CO2 and CH4 emission time of the Chinese milk vetch during the turning over period, slowing down the greenhouse effect, saving the number of fertilizations, and saving labor. Under the premise of maintaining stable rice yield, the content of amylopectin, protein and amino acids in rice is increased, and the quality of rice is improved.
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