越冬期覆膜对冬小麦生长发育及产量的影响  

Effects of Film-Covering During Overwintering Stage to the Growth and Development and the Yield of Winter Wheat Plant

作　　者：李建民[1] 王玉平[1] 于运华[1] 罗诗铭 

机构地区：[1]中国农业大学农学系,北京100094

出　　处：《中国农业大学学报》1998年第S4期34-38,共5页Journal of China Agricultural University

基　　金：国家"九五"攻关课题的部分内容

摘　　要：研究结果表明,晚播冬小麦在越冬期覆膜一段时间,可明显提高覆膜期间的温度,促进冬小麦幼穗分化、加快其生育进程,从而延长冬小麦中后期的生育长度,并取得增加穗粒数、提高千粒重、增加产量的效果。The effects of covering wheat seedling with plastic film for several days during the period of overwintering stage to the growth and development and the yield of winter wheat(Triticum aestivum L.)plants was studied in The Science Garden of China Agricul- tural University from Oct.1997 to Jun.1998.Three winter wheat varieties with different winterness were used,which named Jimai 26,H92-112 and Xuzhou 25 came from Hebei, Shandong and Jiangsu Province respectively.The film-mulching could increase the temper- ature around seedlings of covering period,promote ear differentiation and accelerate plant growth and developmental course,therefore the middle and later growth and developmen- tal period be extended,and the effects of increasing kernel number per ear,kernel wheight and raising yield could be observed.

关 键 词：冬小麦 越冬期 覆膜 幼穗分化 生长发育 

分 类 号：S512.1[农业科学—作物学]