中国稻米Issue(4)：53-55,3.DOI:10.3969/j.issn.1006-8082.2015.04.010
光氮互作对水稻开花后物质生产和产量的影响
The Interactive Effects of Post-anthesis Light Intengity and Nitrogen Appication Interactive on Biomass Production and Grain Yield of Rice
摘要
Abstract
Pot culture experiments were conducted using two hybrid rice varieties with the method of shading to control the light in-tensity after heading. The effects of light intensity and nitrogen application and their interactive effect on the biomass production and grain yield of rice were investigated to explore the quantitative relation of interactive effect of post-anthesis light and nitrogen on rice. The result indicated that the effects of light intensity (X2, KJ/m2/d) and N application (X1,g/kg soil) on rice biomass and grain yield were mathematically represented by the following equation:Y=a0+a1X12+a2X1X2. A quadratic multinomial equation could be used to de-scribe the correlation between N application and rice biomass. Moreover, a linear model could be used to describe the correlation be-tween light intensity and biomass. The optimum N rate could be estimated by the light intensity after heading:N opt=b0+b1X2. The opti-mum of N fertilizer was influenced lineally by light intensity or the average solar radiation per day during the treatment period, under the study condition.关键词
水稻/氮/光/干物质积累/产量Key words
rice/nitrogen/light/dry matter accumulation/yield分类
农业科技引用本文复制引用
王强,钟旭华,黄农荣..光氮互作对水稻开花后物质生产和产量的影响[J].中国稻米,2015,(4):53-55,3.基金项目
广东省自然科学基金（04002089）；广东省重大科技专项（2005A20402001）；广西自然科学基金（2014GXNSFBA118071）；广西农业科学院科研项目（桂农科2014YD06）；公益性行业（农业）科研专项项目 （）
