播期对杂交粳稻辽优9952产量及构成因素影响

摘要

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 the 1000-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%).%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%).