摘要
以常规粳稻徐稻3号为供试材料,设置不同养分管理试验,研究了养分管理措施对水稻产量、叶面积指数、齐穗期株型以及氮素利用效率的影响。结果表明,通过养分优化管理,能有效提高江苏常规粳稻产量和氮素利用率。与当地高产模式相比,高产高效模式(合理投入获得高产)增收效益最为明显,较其增收4 366.5元/hm^2,氮素利用率从17.7%提高到了36 1%。
The effects of nutrient management,leaf area index（LAI）,the shape of heading stage and the nitrogen use efficiency were studied under different nutrient treatments（4＋X） by taking Xudao3 as the material.The results showed that optimizing nutrient management could increase the yield and the nitrogen use efficiency.Compared with the local high-yield mode,the high-yielding and high-N-use-efficiency cultivation mode increased the economic income by 32.7%（4 366.5 Yuan/hm^2） and increased the nitrogen use efficiency from 17.0%to 36.1%.
出处
《土壤》
CAS
CSCD
北大核心
2012年第2期218-224,共7页
Soils
基金
农业部公益性行业科研专项项目(200803030)资助
关键词
产量
株型
群体质量
氮素利用率
Yield
Plant type trait
Colony characteristics
Nitrogen use efficiency
