华北农学报Issue(6)：214-219,6.
秸秆还田对小麦碳氮转运和产量形成的影响
Effect of Straw-returning on Carbon and Nitrogen Assimilate Translocation and Yeild Formation in Wheat
摘要
Abstract
In order to provide theoretical basis for high-yield wheat cultivation and scientific straw-returning , the experiment was conducted under field condition for two consecutive years .To investigate the effects of straw-re-turning on carbon and nitrogen assimilate translocation ,wheat yield components and quality formation ,an experiment of 4 treatments (Rice-straw,RS and wheat-straw,WS returning in single season ,rice-wheat straw,WR returning in double season and no straw application , CK ) were executed under rice-wheat double cropping system .Results showed that straw-returning increased the redistribution amount of nitrogen accumulated pre-anthesis and the contri-bution of nitrogen accumulated pre-anthesis to grains ,and the contribution rate exceeded 80%.Straw-returning de-creased the contribution percentage of total soluble sugar remobilization quantity to grain starch yield ( PSGS) in the vegetative organs to the grain ,but increased the PSGS in leaves while decreased the PSGS in sheathes and stems . Grain yield components were essentially altered by straw-returning .There were a decrease of effective panicle num-ber and an incerease of kernel per spike and weight of 1000 kernels,resulting in a slight but not significant decrease in grain yield .Under straw-returning ,mature grains had an increase of protein content and a decrease of starch con-tent.The main reason for decrease in total starch content is that straw-returning significantly decreased the amyl-opectin content but had no effects on the amylose content .关键词
小麦/秸秆还田/碳氮转运/产量形成Key words
Wheat/Straw returning/Carbon and nitrogen assimilate translocation/Yeild formation分类
农业科技引用本文复制引用
张传辉,杨四军,顾克军,顾东祥,石祖梁,张斯梅,常志州..秸秆还田对小麦碳氮转运和产量形成的影响[J].华北农学报,2013,(6):214-219,6.基金项目
江苏省农业科技自主创新项目（CX（12）1002）；江苏省博士后科研资助计划项目 （）
