行株距配比对水稻群体特征的影响  

EFFECT OF RATIO OF ROW SPACING TO INTRAROW SPACING ON POPULATION CHARACTER IN RICE

作　　者：王夫玉[1] 张洪程[1] 赵新华[2] 段祥茂[2] 高德友[2] 

机构地区：[1]扬州大学农学院,江苏扬州225009 [2]江苏省东海县农业科学研究所,江苏东海222300

出　　处：《甘肃科学学报》2001年第2期38-42,共5页Journal of Gansu Sciences

摘　　要：试验表明 ,相同密度不同行株距比例 ( RS/IS)显著影响水稻群体发展。群体产量、穗数 /6 6 7m2 、总颖花量、结实率、千粒重均随 RS/IS呈抛物线变化 ,每穗颖花数、穗颈节间长及剑叶、倒二叶单叶面积则随 RS/IS呈线性变化 ,RS/IS增大 ,群体内部光照强度增加 ,光分布趋于合理。This experiment showed thatcharacters of rice population were influenced by the ratio of row spacing to intrarow spacing( RS/IS) under the same planting density.The relationship between yield and RS/IS assumed a parabolic change,so did the relationship between panicles/6 6 7m2 ,total spikelets per6 6 7m2 ,setting percentage,or1 0 0 0 - grain weight and RS/IS.The equation between spikelets/panicles and RS/IS was a linear one,so was the equation between rachis internode length,single leaf area( SLA) of the first leaf from the top,or SL A of the second leaf from the top and RS/IS.When RS/IS was on the increase,the intensity of illumination was increased and the light distribution tended to be efficient inside rice population.

关 键 词：水稻群体 行株距配比 产量结构 单叶面积 穗颈节间长 光照强度 透光率 

分 类 号：S511.04[农业科学—作物学]