晚季杂交水稻产量生理与库源关系及调控对策研究  

STUDIES ON THE RELATIONSHIP OF THE YIELD PHYSIOLOGY AND SOURCE-SINK AND ITS CONTROL IN LATE CROPPING HYBRID RICE

作　　者：黄升谋 

出　　处：《江西农业大学学报》1993年第A03期34-43,共10页Acta Agriculturae Universitatis Jiangxiensis

摘　　要：本文从茎蘖动态与成穗率、叶面积动态、干物质生产动态、籽粒灌浆特性等方面分析了三种杂交组合的产量形成规律,并探讨了其源库特征及类型.结果表明,库容/有效群体指数较好地反映了库源相互关系,以其作为判断源库关系的指标是适宜的.水稻结实率差异主要表现在中部及下部二次枝梗籽粒(弱势粒),只有弱势粒结实率才反映源库关系.另外,亚种间杂交组合5460S/广抗粳2号为源限制型,其干物质生产、运转、株型、库容量表现出较大优势,但成穗率低,结实率和充实度低,高产措施必须在较高叶面积基础上提高净同化率.The yield physiology and sink-source relation as well as regulation approach of latehybrid rice were studied,and the main results obtained was summarized as fellows.1.5460s/Guang Kang Gen NO.2 and W6154s/Zao Te qin are both source-limitedtype,while San-You NO.63 is sink-limited one.2.Increasing application amount of nitrogen fertilizer,especially at tillering stage,canincrease effective community index,but show little affection on the sink capacity,So it candecrease the ratio of sink capacity to effective community index.3.The ratio of sink capacity to effective community index has close correlation withsink-cource index,So it can be taken as targets for regulation of the relation between sinkand source in rice cultivation.4.The difference of setting percentage of rice appears mainly in middle and low sec-ondary branches kernal,the setting percentage of middle and low secondary brancheskernal were used to judge sink-source relation can improve sensitivity.

关 键 词：杂交稻 晓稻 产量 库源关系 调节 

分 类 号：S511.330.1[农业科学—作物学]