水稻抽穗前期剪去上部三片功能叶对产量结构的影响  

Effect of Cutting off the Upper Three Leaves during Early Heading Stage to the Yield Structure of Rice

作　　者：周晓彬 龚德平 段洪波 舒冰 徐国华 唐浩月[2] 范玉刚[2] 刘义荣 徐明建 

机构地区：[1]湖北荆楚种业股份有限公司,湖北荆州434020 [2]湖北省种子集团公司,武汉430070 [3]湖北省随县柳林镇农业技术服务中心,湖北随县431523

出　　处：《湖北农业科学》2011年第13期2609-2612,共4页Hubei Agricultural Sciences

基　　金：湖北省农业科技创新中心资助项目(2007-620-001-03)

摘　　要：研究了剪去不同水稻品种(组合)上部3片功能叶(或上部3片功能叶组合)对有效穗数、每穗实粒数、千粒重、单株子粒重的影响。结果表明,不同处理对各性状的作用大小均为剑叶+倒二叶+倒三叶>剑叶>倒二叶>倒三叶;大部分品种单独剪去上部3片功能叶的作用之和大于同时剪去上部3片功能叶效应值,少数品种与此相反;与前人试验结果比较发现,试验材料在稀植条件下剪去功能叶后,单株子粒重的减少比例比穗重的减少比例更能反映出功能叶对穗部光合产物的影响。Different rice varieties were used to study the effect of removing one of the upper three leaves or their combination on panicle number,seeds per panicle,grain weight,grain weight per plant.The results showed that the effects of different treatments on all the trait were flag＋2nd leaf＋3rd leaf〉 flag〉 2nd leaf〉 3rd leaf.For most of the varieties,the sum effect value of cutting off three functional leaves individually was higher than the effect value of cutting off three functional leaves at the same time;while that of a few other varieties was apposite.Comparing with previous experimental results,it was found that when cutting off functional leaves under low density conditions,the percentage reduction of grain weight per plant could reflect the effect of the functional leaves on photosynthetic products better than the percentage reduction of ear weight.

关 键 词：水稻 剪去上部3片功能叶 效应值 穗重 光合产物 

分 类 号：S511[农业科学—作物学] S31