中国水稻科学2018，Vol.32Issue(2)：169-180,12.DOI:10.16819/j.1001-7216.2018.7041
生化抑制剂组合与施肥模式对黄泥田水稻群体质量的影响
Effects of Combined Biochemical Inhibitors and Fertilization Models on Rice Population Quality in Yellow Clayey Field
摘要
Abstract
[Objective]Application of biochemical inhibitors is one of the effective ways to improve fertilizer use efficiency of rice. The objective of this study is to reveal rice population heterosis as affected by combined inhibitors and fertilization models, and find a suitable high-yield and efficient application method for rice growing region in yellow clayey soil. [Method]The experiment was conducted to study the interaction effect of biochemical inhibitor combinations and fertilization models (one-off and three-time fertilization) on population quality of rice in yellow clayey field using two factor randomized block design. [Result]Three-split urea fertilization significantly increased number of productive tillers, effective leaf area index(LAI), dry matter accumulation from heading to maturity, SPAD value at heading stage and grain yield of rice by 0.8%, 24.0%, 9.3%, 1.5% and 14.2% compared with those of one-off fertilization treatment, respectively. On the other hand, addition of biochemical inhibitor (NBPT/NPPT+CP) significantly increased number of productive tillers, panicle setting rate, dry matter accumulation after heading, efficient LAI, and SPAD value at heading stage of rice, and also improved the grain to leaf ratio, enhanced the source-sink relationship among different fertilization models. Correlation analysis showed that dry matter accumulation from heading to maturity was significantly positively related with rice grain yield. Application of new urease inhibitor NPPT alone or combined with CP had the same effect on population quality in paddy field with NBPT. [Conclusion]The integration and optimization of fertilization technique and combined inhibitors application can improve population quality of rice, photosynthetic product transformation and grain yield in yellow clay field.关键词
脲酶抑制剂/硝化抑制剂/N-丁基硫代磷酰三胺(NBPT)/N-丙基硫代磷酰三胺(NPPT)/2-氯-6-(三氯甲基)吡啶(CP)/黄泥田/群体质量Key words
urease inhibitor/nitrification inhibitor/N-(n-butyl) thiophosphoric triamide (NBPT)/N-(n-propyl) thiophosphoric triamide (NPPT)/2-chloro-6-(trichloromethyl)pyridine (CP)/yellow clay field/population quality分类
农业科技引用本文复制引用
周旋,金蓉,吴良欢,戴锋..生化抑制剂组合与施肥模式对黄泥田水稻群体质量的影响[J].中国水稻科学,2018,32(2):169-180,12.基金项目
苕溪流域农村污染治理技术集成与规模化工程示范(2014ZX07101-012) （2014ZX07101-012）
国家重点基础研究发展计划资助项目(2015CB150502) （2015CB150502）
浙江省"三农六方"科研协作计划资助项目 （）
浙江大学—浙江奥复托化工有限公司合作项目. （）
