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- Title
氮肥减施下添加硝化抑制剂对夏玉米氮素累积转运 和产量的影响.
- Authors
张盼盼; 李川; 张美微; 赵霞; 牛军; 乔江
- Abstract
To clarify the effects of nitrification inhibitor on nitrogen high-utilization in the summer maize production, two-year field experiments were conducted to determine the effects of nitrification inhibitor (2-chloro-6-trichloromethylpyridine, CP) application on grain yield and nitrogen accumulation and transportation and utilization of summer maize under reduced nitrogen (N) treatments in Henan province. The results showed that, compared with the normal N fertilization treatment, N reduced by 20% with CP had no effect on the each organ of plant and total dry matter accumulation, as well as N absorption and accumulation. There was no difference in grain yield between treatments and normal application. With N application increased, the amount of N transportation in the plant showed first increased and then decreased. The treatment of N reduced by 20% with CP had the highest N transportation amount and transportation rate with 62.41 kg·hm-2 and 44.54%, respectively, and the contribution rate to grain was 33.96%. The nitrogen partial factor productivity (NPFP) decreased with N application increased with the average 58.94 kg·kg-1. Amount of pure N absorbed per 100 kg grain was averagely 1.96 kg and highest value was obtained in treatment of N reduced by 10%. Based on the grain yield, N transportation and accumulation and utilization, the application of N reduced by 20% with CP could maintain the high and stable yield, promote N use efficiency, and reduce cost and increase efficiency in maize production.
- Subjects
HENAN Sheng (China); NITRIFICATION inhibitors; TRANSPORTATION rates; FIELD research; PLANT drying; NITROGEN
- Publication
Journal of Agricultural Science & Technology (1008-0864), 2023, Vol 25, Issue 6, p181
- ISSN
1008-0864
- Publication type
Article
- DOI
10.13304/j.nykjdb.2021.0990