强化栽培对水稻后期群体质量及产量形成的影响  

Effects of SRI Technique on Population Quality after Heading Stage and Yield Formation in Rice

作　　者：陈惠哲[1] 朱德峰[1] 饶龙兵[2] 林贤青[1] 张玉屏[1] 

机构地区：[1]中国水稻研究所水稻生物学国家重点实验室,杭州310006 [2]中国林业科学研究院亚热带林业研究所,富阳311400

出　　处：《华中农业大学学报》2006年第5期483-487,共5页Journal of Huazhong Agricultural University

基　　金：农业部重大研究专项(超级稻配套栽培技术开发与集成);国家农业科技跨越计划项目(2003-1)资助

摘　　要：以高产水稻品种两优培九和II优7954为材料,研究强化栽培对水稻中后期群体质量和产量形成的影响。结果表明,强化栽培在单位面积穗数不占优势下,主要是通过改善水稻后期群体质量,促进大穗形成从而实现增产。在强化栽培适宜种植密度下,抽穗期功能叶的配置比较合理,叶片宽且挺,能较好的截获光能,且水稻抽穗期至花后20 d的叶面积衰退率较少,有利于抽穗后光合能力的提高和物质积累,抽穗期茎鞘物质积累多,有利于提高穗粒数和结实率,保证水稻大穗形成。The relationship between population quality after heading stage and yield formation under SRI cultivation pattern was studied systematically using the high yield rice Liangyoupeijiu and Ilyou7954 as material. The results showed that SRI cultivation had no advantage over the conventional cultivation in the ears number per hm^2, however, SRI could improve population quality after heading stage and formed big spikelet. Adopting the proper plant density under SRI condition, there are good gesture from inverse 1^st leaf to 3^rd leaf at heading stage and leaf area decrease rate was low from heading stage to 20 days after flowering. SRI had obviously advantage over the conventional cultivation in photosynthesis and the accumulation matter with the higher weight of the stem and sheath,availing to increase grains per panicle and seed setting rate,and to form big spikelet.

关 键 词：水稻 强化栽培 群体质量 大穗 产量 

分 类 号：S511.01[农业科学—作物学]