小麦秸秆覆盖对夏玉米干物质生产及主要性状的影响  

Effect of Wheat Straw Mulch on Dry Matter Production and Major Characters of Summer Maize

作　　者：许海涛[1] 王友华[1] 许波[1] 张海申[1] 

机构地区：[1]河南省驻马店市农业科学研究所,河南驻马店463000

出　　处：《作物杂志》2008年第6期45-48,共4页Crops

基　　金：河南省科技攻关项目(0424020016)

摘　　要：研究了小麦秸秆覆盖对夏玉米干物质生产及主要性状的影响。结果表明:与传统露地栽培相比,小麦秸秆覆盖有利于夏玉米根系的生长和干物质的积累,叶面积系数前期增长快,后期下降慢,叶面积高值持续期长,干物质积累快,穗粒数多,千粒重高,产量性状明显改善,增产显著。小麦秸秆覆盖对表土层(0～30cm)具有明显的保墒效果,尤其是夏玉米生长前期。Effect of wheat straw mulch on dry matter production and major characters of summer maize were studied. The results showed that comparing with conventional field planting, summer maize with wheat straw mulch was advantageous to roots and dry matter growth and accumulation. The LAI increased faster than that with conventional field planting at early stage and decreased slowlier at late stage. The summer maize with wheat straw mulch kept higher LAI during a relatively longer period,with faster dry matter accumulation, more kernel number per ear and higher 1000 -kernel weight. Wheat straw mulch planting improved yield components and increased grain yield of summer maize signigicantly. Straw mulch had significant effect on water saving of the surface soil （0 -30 cm ）, especially at the early growth stages.

关 键 词：玉米 秸秆覆盖 干物质生产 主要性状 

分 类 号：S513[农业科学—作物学]