The SOI model of quantitative cultivation of super-high yielding rice.

作者：Hongcheng Zhang, Guicheng Wu, Wenge Wu, Qi-Gen DAI, Zhong-Yang HUO, Xu Ke, Gao Hui, Haiyan Wei, Huang XingFu, Jin-Long GONG · 发表于：Zhongguo nongye Kexue · 年份：2010 · 被引用次数：12 · 研究领域：Rice Cultivation and Yield Improvement、Agricultural Systems and Practices、Environmental and Agricultural Sciences

【Objective】 A model of cultivation for stable yield of super-high-yielding rice was studied. 【Method】 Taking the early-maturing late-japonica varieties,Wujing 15 and Changyou 1,as materials,through the nitrogen fertilizer regimes under other cultivating conditions all being the optimal,three strategic management models of cultivation were examined,i.e. SOI (stabilizing,optimizing,intensifying during the early ,middle,late phase correspondingly to adopt the ratio of basal-tillering and panicle initiating fertilizer of 50:50 and nitrogen applying leaf age of remaining leaf primordium number of 4,3),BP (balance promoting during all phase to adopt the ratio of basal-tillering and panicle initiating fertilizer of 40:60 and nitrogen applying leaf age of remaining leaf primordium number of 5,4,3) and PC (promoting,controlling during the early,middle phase correspondingly to adopt the ratio of basal-tillering and panicle initiating fertilizer of 75:25 and nitrogen applying leaf age of remaining leaf primordium number of 5),in contrast to the CK (A model of conventional cultivation management) in field production of one-seasoned rice in the region of the middle and lower reaches of the Yangtze River. Their results were systematically compared in various aspects,such as yielding and its components,dynamics of population stems and tillers,leaf area index,photosynthetic potential,grain-leaf ratio,production of dry matter,root activity after heading,etc. In addition,confirmatory tests on ...