INSTITUTE OF SOIL SCIENCE, CHINESE ACADEMY OF SCIENCES
发明人:
Xun LI,Zengqiang DUAN,Chunwu ZHU
申请号：
US17739222
公开号：
US20220369543A1
申请日:
2022.05.09
申请国别(地区):
US
年份:
2022
代理人:
摘要：
Disclosed is a method for optimizing a particle size of slow-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 slow-release nitrogen fertilizer oxamide particles for single basal fertilization that matches a nitrogen requirement in the rice growth duration by using a formula.
