晚播对小麦生长发育特性及产量的影响  

Effects of Late Seeding on Growth Characteristics and Yield of Wheat

作　　者：沈庆雷 杜斌 赵田芬 张平 袁晓明 韩根成 孙小明 

机构地区：[1]上海海丰现代农业有限公司,江苏大丰224153

出　　处：《现代农业科技》2015年第1期40-40,42,共2页Modern Agricultural Science and Technology

摘　　要：以扬麦11小麦品种为研究对象,通过设置不同播期处理,研究了晚播对冬前麦苗素质、全生育期、生育进程及产量构成的影响。结果表明:随着播期的推迟,小麦生育期缩短,生育进程推迟。晚播麦产量构成表现为有效穗数增加,穗粒数和千粒重减少,最终产量下降,其中穗粒数的降低是小麦产量下降的主要影响因子。Taking wheat variety Yangmai 11 as the research object, different sowing date was set as treatment, to research the influence of different late seeding on seedling quality, growth period, growth dynamic and yield components. Results showed that with the seeding date postponed, the growth period shortened ,growth process delayed.The yield component of late sowing wheat such as ear numbers increased ,grain number per spike and 1000 grain weight decreased, the yield decreased finally, in which reducing the number of grains per panicle was the main factor of wheat production decline.

关 键 词：小麦 晚播 生育期 产量构成 

分 类 号：S512.1[农业科学—作物学]