江西农业大学学报Issue(1)：42-47,6.
分蘖肥不同施用时期对机插双季稻产量和群体发育的影响
Effect of Application of Tillering Fertilizer at Different Times on Grain Yield and Population Development of Double-Cropping Rice under Transplanting by Machine
摘要
Abstract
Application of tillering fertilizer has a major impact on rice tillering and grain yield,but the best fertilization time is not clear for rice under transplanting by machine.In this study,the varieties of Zhongjiazao 17 ( early⁃rice) and Hyou 518 ( late⁃rice) were used as the experiment materials to study the effect of applica⁃tion time of tillering fertilizer on development and grain yield of mechanical transplanting rice seedlings. The treatments included application of tillering fertilizer at 7,10 and 13 days after the transplanting,namely D07, D10 and D13,respectively.The results showed that compared with that of the D07 plots,the grain yields of ear⁃ly⁃rice of the D10 plots and D13 plots decreased by 9.4% and 3.8% respectively,and the yields of late⁃rice of the D10 plots and D13 plots decreased by 4.5%and 12.6%respectively.Application of tillering fertilizer at dif⁃ferent times had a profound effect on the grain number per panicle and seed setting rate of early⁃rice ( P<0.05).The grain number per panicle of the D10 plots was significantly lower than that of the D07 plots.In addi⁃tion,the seed setting rate of the D13 plots was greatly lower than that of the D07 plots.The number of effective tillers of late⁃rice was dominated by the effects of application periods of tillering fertilizer (P<0.05).The num⁃ber of effective tillers of the D07 plots was obviously higher than that of the D13 plots.Compared with these of the D07 plots,the number of productive tillers,leaf area index,dry matter accumulation and nitrogen uptake per area were decreased in the D10 and D13 plots during the double rice growing periods. The results of this preliminary study suggests that tillering fertilizer should be immediately applied after regreening to improve rice population quality and develop the high yield potential of mechanical transplanting rice seedlings.关键词
机插双季稻/分蘖肥/施肥时期/产量/群体发育Key words
double-cropping rice under transplanting by machine/tillering fertilizer/fertilization time/grain yield/population development分类
农业科技引用本文复制引用
商庆银,吕伟生,曾勇军,黄山,杨秀霞,谭雪明,石庆华,潘晓华..分蘖肥不同施用时期对机插双季稻产量和群体发育的影响[J].江西农业大学学报,2015,(1):42-47,6.基金项目
国家“十二五”科技支撑计划项目（2011BAD16B04）、江西省“555”领军人才项目（赣财字2012（1）号）、国家农业科技成果转化资金项目（2013GB2C500244）、江西省高校科技落地计划项目（12003）和农业部公益性行业科研专项 （）
