不同灌水量对免耕玉米土壤水分和产量的影响  

Effect of Irrigation Amount on Soil Water and Yield of No-tillage Corn

作　　者：路战远[1] 张向前[1] 张德建[2] 景振举 姚仲军 程玉臣[1] 张建中[1] 白海[1] 王玉芬[2] 

机构地区：[1]内蒙古农牧业科学院,内蒙古呼和浩特010031 [2]内蒙古大学,内蒙古呼和浩特010021 [3]喀喇沁旗农业技术推广站,内蒙古王爷府024400 [4]喀喇沁旗乃林镇科技服务站,内蒙古乃林镇024417

出　　处：《内蒙古农业科技》2012年第6期19-20,23,共3页Inner Mongolia Agricultural Science and Technology

基　　金：内蒙古科技计划项目(20110709)

摘　　要：为提高保护性耕作玉米田的出苗率、产量和经济效益,文章研究了免耕条件下播前不同灌溉量对玉米出苗率、土壤含水量、玉米产量以及经济效益的影响,结果表明:留茬灌溉和灭茬浅旋灌溉的出苗率、不同土层含水量、玉米的植物学性状、产量以及总收益和纯收益均高于留茬不灌溉,且留茬灌溉和灭茬浅旋灌溉的出苗率比留茬不灌溉高5.48%和6.38%,不同层次的土壤含水量呈M型变化趋势,留茬灌溉和灭茬浅旋灌溉的产量比留茬不灌溉高13.6%和14.7%,留茬灌溉和灭茬浅旋灌溉的纯收益比留茬不灌溉高11.7%和9.9%。结论:播前灌溉可提高玉米的出苗率和产量。In order to increase the emergence rate,yield and economical benefit of maize under conservational tillage,the effects of different irrigation quantity before sowing on emergence rate,soil water content,yield and economical benefit were studied.The results showed that：the emergence rate,water content in different soil layers,botanical characters,yield,total income and net income of irrigation with stubble leaving and irrigation with stubble breaking and rotary tillage all higher than that of noirrigation with stubble leaving,and the emergence rate of irrigation with stubble leaving and irrigation with stubble breaking and rotary tillage increased by 5.48% and 6.38% than that of no-irrigation with stubble leaving.The soil water content in different soil layers showed a ＂M＂ trend.The yield of irrigation with stubble leaving and irrigation with stubble breaking and rotary tillage increased by 13.6% and 14.7% than that of no-irrigation with stubble leaving,the net income increased by 11.7% and 9.9% per mu.So irrigation before sowing can increase the emergence rate and yield of maize.

关 键 词：灌水量 免耕 玉米 土壤水分 产量 

分 类 号：S513[农业科学—作物学]