Method for optimizing particle size of controlled-release nitrogen fertilizer oxamide particles for single basal fertilization

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United States of America Patent

PATENT NO 11981612
APP PUB NO 20220369543A1
SERIAL NO

17739222

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Disclosed is a method for optimizing a particle size of controlled-release nitrogen fertilizer oxamide particles for single basal fertilization, which comprises the following steps: measuring a pH value of the soil in a region; measuring an organic matter content OM of the soil, with a unit of g·kg−1; measuring a total nitrogen content TN of the soil, with a unit of g·kg−1; collecting an average temperature T at a 10 cm depth of the soil in a rice growing season in the region, with a unit of ° C.; and for a rice variety with a growth duration of D, with a unit of day, calculating a diameter of controlled-release nitrogen fertilizer oxamide particles for single basal fertilization that matches a nitrogen requirement in the rice growth duration by using a formula.

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Patent OwnerAddress
INSTITUTE OF SOIL SCIENCE CHINESE ACADEMY OF SCIENCES210008 NO 71 BEIJING EAST ROAD JIANGSU NANJING NANJING CITY JIANGSU PROVINCE 210008

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Inventor Name Address # of filed Patents Total Citations
Duan, Zengqiang Jiangsu, CN 1 0
Li, Xun Jiangsu, CN 62 236
Zhu, Chunwu Jiangsu, CN 1 0

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