摘要
为探索适合河北省的冬小麦高产栽培模式,明确适应气候变化的冬小麦适期晚播范围,实现冬小麦高产稳产,以冬小麦品种冀5265为试材,设播期10月5日、10月9日、10月13日和10月17日计4个处理,并调整播量分别为204 kg/hm2、228 kg/hm2、255 kg/hm2和288 kg/hm2,2008～2009年在河北省藁城市进行了不同播期处理对冬小麦产量及其生长发育的影响研究。结果表明:随着播期的推迟,越冬前的积温减少,冬小麦单株分蘖数、次生根数、株高、成穗率、单位面积穗数和穗粒数均呈逐渐降低趋势,最终导致冬小麦显著减产;通过回归方程模拟计算得出,河北省冬小麦的适宜播种期为10月5～11日,相应的合理基本苗数为307.5～379.5株/m2。
Adjust the sowing date to fit for the climate change and get the high yield of winter wheat is very important in Hebei Province.Taking winter wheat cultivar Ji 5265 as test material,4 sowing dates including October 5,October 9,October 13 and October 17 were desighed,and the sowing rate respectively were 204 kg/hm2,228 kg/hm2,255 kg/hm2 and 288 kg/hm2,the effects of different sowing dates on the yield and growth of winter wheat in Gaocheng City of Hebei Province during 2008-2009 were studied.The results showed that the accumulated temperature before wintering was reduced,the plant tillers number,secondary root number,plant height,spike rate,spike number per unit and the grain number per spike of winter wheat were decreased with the delay of sowing date,and the yield of winter wheat was decreased significantly with the delay of sowing date.Through the regression equation simulation calculation,we recommended that the suitable sowing date was October 5-11,and the reasonable basic seeding number was 307.5-379.5 plants/m2 in Hebei Province.
出处
《河北农业科学》
2013年第2期19-23,共5页
Journal of Hebei Agricultural Sciences
基金
中国科学院知识创新项目(KZCX2-EW-415)
关键词
冬小麦
播期
产量
河北省
Winter wheat
Sowing date
Yield
Hebei Province
