期刊论文

Effects of Different Ratios of Inorganic-N Substituted by Manure on Rice Yield,Nitrogen Absorption and Nitrogen Loss Risk

中文

中国农业科技导报

1008-0864

2020

22

9

132-142

10.13304/j.nykjdb.2019.0187

国家重点研发计划项目(2016YFD0200809) 湖南省科技计划项目(2016JC2030)。

本校为第一机构

有机肥与化肥配施是农业生产中稳产增产、减少化肥施用和保护环境的重要生产模式。为探索有机肥替代化肥氮的合理比例,采用田间小区试验,设置6个有机肥替代化肥氮的比例梯度(0%、10%、20%、30%、 40%和50%),分析了有机肥替代化肥氮的比例差异对水稻产量、氮素利用率和氮流失风险的影响。结果表明:与常规化肥处理比较, 20%的替代比对早稻的有效穗数显著增加了5.8%,对晚稻的产量构成因素(穗长增加16.1%、有效穗数增加7.4%、实粒数增加11.8%、千粒重增加11.1%、结实率增加4.5%)均有显著的增加效果,且早、晚稻分别显著增产13.9%和18.6%,氮肥吸收利用率分别显著增加4.7%和4.9%。替代比例与早、晚稻产...

The combination of organic and inorganic fertilizer is an important agricultural mode for increasing crop production,reducing the application of chemical fertilizer and protecting environment. In order to explore the optimal ratio of organic fertilizer-N instead of chemical fertilizer-N,a field plot experiment was conducted to study the effects of different ratios of organic fertilizer-N replacing chemical fertilizer-N on rice yield,nitrogen utilization and nitrogen loss risk,and six consecutive alternative proportional gradients(0%,10%,20%,30%,40%,50%) were set in this paper. The results show...