不同播期对洛旱7号小麦幼穗分化及产量的影响  

Effects of Different Sowing Dates on Spike Characteristics and Yield of Luohan 7

作　　者：冯伟森 张学品 吴少辉 高海涛 张灿军 

机构地区：[1]洛阳市农林科学院,河南洛阳471022

出　　处：《河南农业科学》2011年第10期32-34,共3页Journal of Henan Agricultural Sciences

基　　金：国家"863"计划项目(2006AA100201);国家科技成果转化资金项目(2008GB2D000188)

摘　　要：采用4个不同的播期,对洛旱7号小麦幼穗分化进程进行研究,旨在探讨不同播期下小麦幼穗分化特点和最佳播期。结果表明:4个播期下洛旱7号小麦幼穗分化进程表现明显不同,并且4个不同播期对其产量要素的影响也较为明显,在C播期(10月15日)下,小麦幼穗分化进程所用时间为155 d,12月23日进入二棱期、4月8日进入四分体时期较为理想,成产三因素中有效穗数达到651.45万穗/hm2、穗粒数达到32.80粒、千粒重达到39.10 g,三者较为协调,产量水平最高(7 235.40 kg/hm2)。由此推论出,洛旱7号小麦最佳播期在10月15日,而适宜播期为10月5-15日。Four different sowing dates were designed to study effects of sowing dates on spike characteristics and the appropriate sowing time of Luohan 7.The results showed that the spike characteristics of Luohan 7 were obviously different under the four sowing dates,and the effects of sowing date on yield components were also obvious.Under the treatment of C sowing date（October 15）,the wheat spike process was 155 d,with the two-rowed period on December 23 and the tetrad period on April 8.The productive spikes reached 6.514 5 million per hectare,the grains per spike were up to 32.80,and the 1 000-seed weight was 39.10 g.The three factors of yield showed coordinated,thereby resulting in the highest production level of 7 235.40 kg/ha.From the above,the best sowing time of Luohan 7 is October 15,so the appropriate sowing dates are from October 5 to October 15.

关 键 词：小麦 洛旱7号 幼穗分化 播期 产量 

分 类 号：S512.1[农业科学—作物学]