现代农业科技Issue(15)：16-17,2.
不同播期对豫东黄潮土区小麦群体及产量的影响
Effects of Different Sowing Times on Group and Yield of Wheat in Yellow Alluvial Soil Area of Eastern Henan
摘要
Abstract
Taking Zhengmai 7 698 and Zhongmai 998 as materials ,effects of different sowing times on group and yield of wheat were studied. The result showed that the difference of tillering was great before the winter and decreased in the spring among different sowing times ,and the difference was maintained until maturation period. The sowing date had the significant negative correlation with the panicle and the yield ,and the correlated coefficients were -0.935**and -0.886*respectively. According to regression analysis ,the regression models of Zhengmai 7698 were established as follows,Y(panicles)=759.8-40.2X and Y(yield)=10 827-552.7 X. The regression models of Zhongmai 998 were Y(panicles)=568.6-11.5X and Y (yield)=10 235-250.9X. If the sowing rate was 150 kg/hm2,the suitable sowing times of Zhengmai 7698 and Zhongmai 998 should be from 10th to 15th in October. This period was better for forming the reasonable population structure and achieving the higher economic production and efficiency. If the sowing date was moved up,the sowing rate should be reduced. The sowing date of Zhengmai 7698 should not be earlier than October 5 th ,and Zhongmai 998 should not be earlier than October 10th. If the sowing date was postponed ,the sowing rate should be increased. If the sowing date was postponed by five days,the sowing rate should be increased by 30 kg/hm2,which could be good for achieving the high and stable yield in different sowing dates.关键词
小麦/众麦998/郑麦7698/播期/群体/产量/豫东黄潮土区Key words
wheat/Zhongmai 998/Zhengmai 7698/sowing time/group/yield/yellow alluvial soil area of eastern Henan分类
农业科技引用本文复制引用
田伟,张珈毓,张慎举,刘艳侠,皇甫自起..不同播期对豫东黄潮土区小麦群体及产量的影响[J].现代农业科技,2013,(15):16-17,2.基金项目
河南省科技攻关计划项目（0424020024）。 （）
