播期对杂交粳稻辽优9952产量及构成因素影响

Effect of Sowing Dates on Yield and Yield components of Hybrid Japonica Rice “Liaoyou 9952”

为了明确不同播种期对北方杂交粳稻产量的影响,以辽优9952、吉粳88为试材,采用随机区组设计,分析播期对水稻的影响,并探讨积温与稻米产量及构成因素的相关性。结果表明,推迟播期对辽优9952产量及构成因素均有显著影响,方差分析结果表明,播期处理产量差异达到极显著水平,每穗成粒数和单位面积穗数呈极显著负相关(-0.838^(**)),每穗成粒率与千粒重呈极显著正相关(0.964^(**)),与产量呈显著正相关。不同播期品种产量和产量构成要素变异差异显著。产量、穗数和每穗成粒数是变异系数较大(14.45%,14.45%,12.81%)。

In order to clarify the effect of different planting time on the yield of japonica hybrid rice.The effect of sowing time on"Liaoyou9952"and"Jijing88"was analyzed by random block design.The results showed that:The delay of the sowing period has significant influence on the yield and composition of the"Liaoning9952".The variance analysis results show that:The yield difference reached a very significant level.The number of grains per panicle and the number of panicles were significantly negative(-0.838**).The grain yield per ear is positively correlated with the1000-grain weight(0.964**).There is a significant positive correlation with yield.The variation of yield and yield components of different planting period was significant.The yield,number of panicles and the number of grains per panicle are larger(14.45%,14.45%,12.81%).