杂交水稻叶穗同伸规律及其在生产上应用研究  

Studies on the Pattern of Leaf Panicle Synchronous Development of Hybrid Rice and Its Application

作　　者：刘振宇[1] 余琼芝 朱芳华[1] 赖桂澄 陈昭声 

机构地区：[1]华南农业大学,广东省农业厅

出　　处：《杂交水稻》1995年第4期30-31,共2页Hybrid Rice

摘　　要：以广东近年种植的８个杂交水稻优良组合为材料，研究了杂交水稻稻穗发育同伸叶的规律和稻穗发育与叶龄余数的相关关系，并且结合过去的研究，建立了广东杂交水稻高产栽培的叶龄模型．Eight popular indica hybrid rice combinations in Guangdong Province were used as the mate-rials to study the relation between the leaf emergence and panicle differentiation stages in hybrid rice from1990 to 1992.The results showed that there were about 4.0 remaining leaves at the initiation of young pani-cledifferentiation in hybrid rice,1.0～1.5 leaves more than in conventional rice, which may result in largerpanicles and heavier grains in hybrid rice. It was also found that there existed a significant linear correlationbetween the panicle developing stage and the remaining leaf number by which the panicle fertilizers can beapplied in the right time to increase the number of spikelets and prevent them from degeneration. Based onthe present experimental results and those of the past researches,a new leaf number model was establishedfor the high yielding culture of hybrid rice in Guangdong Province.

关 键 词：杂交水稻 稻穗发育 叶龄余数 叶龄模型 

分 类 号：S511.101[农业科学—作物学]