半干旱区地膜覆盖及补灌对玉米产量及干物质积累和分配的影响  

Effect of Film Mulching and Supplementary Irrigation on Yield and Dry Matter Distribution of Maize in Semi-arid Area

作　　者：郑立龙[1] 

机构地区：[1]甘肃省农业科学院农业经济与信息研究所,甘肃兰州730070

出　　处：《节水灌溉》2015年第12期47-51,共5页Water Saving Irrigation

摘　　要：以常规的平作栽培为对照,在不同覆盖方式,不同集雨补灌方式下研究了玉米干物质积累及分配的情况。试验结果表明,地膜覆盖对玉米生物产量和经济产量均有显著提高,与对照处理比较,全膜平作生物产量提高82.8%,经济产量提高108.7%,全膜垄作生物产量提高77.8%,经济产量提高99.0%。拔节期和大喇叭口期补灌可提高玉米产量。大喇叭口期以前以玉米干物质积累以叶器官为主,吐丝期以后以穗部为主。The effect of film mulching and supplementary irrigation on yield and dry matter distribution of maize in semi-arid area are analyzed. The results show that the film mulching can improve the biomass production and the yield of corn. Compared with conventional cultivation, conventional cultivate with plastic mulching can enhanced the biomass production by 82. 8% and the yield by 108. 7%. Ridge cultivation with plastic mulching can enhanced the biomass production by 77.8% and the yield by 99.0%. There is an increase in yield when catchments water be supplementary irrigated in shooting stage and trumpet stage. The dry matter accumulated mainly on leaves before trumpet stage and on ear after grain filling stage.

关 键 词：半干旱区 玉米 地膜覆盖 集雨补灌 生产力 

分 类 号：S513[农业科学—作物学]