不同覆膜方式对玉米产量和节水保墒的影响  

Effects of Different Mulching on Maize Yield and Water-saving Efficacy

作　　者：何增国[1] 杨慧林[1] 黄少学 

机构地区：[1]古浪县农业技术推广中心,甘肃古浪733100

出　　处：《土壤与作物》2017年第2期113-118,共6页Soils and Crops

摘　　要：为验证在控制灌水量的前提下不同覆膜方式玉米增产效果,试验研究探讨了不同覆膜方式对灌水量、土壤温度、土壤湿度和玉米性状及产量影响。结果表明,在相同灌溉约束条件下,全膜平铺覆土全生育期灌水总量最少,但其土壤含水量、水分利用效率、产量均高于全膜双垄沟灌和半膜平作畦灌处理,节水保墒效果及增产效果明显;不同覆膜方式对土壤温度影响无差异,不会对玉米生长产生影响;全膜平铺覆土玉米产量最高为14 763 kg/hm^2,分别比全膜双垄沟灌、半膜平作畦灌处理增产4.18%、31.3%。In order to understand the yield - increasing effect in maize, by different mulching, the effects of different mulching on ir- rigation amount, soil temperature, soil moisture and maize traits and yield were analyzed. Results showed that under the same irriga- tion condition, compared with full double - ridge mulching with ditch irrigation （ treatment B） and half flat mulching with border irriga- tion （treatment CK）, full flat mulching （treatment A） had the minimum water use for the whole growing period but higher soil mois- ture, water use efficiency and yield. No significant differences were found among different mulching for soil temperature and maize growth. Treatment A had the highest maize yield up to 14 763 kg / hm2, which was 4. 18%, 31.3% higher than that of treatment B and treatment CK, respectively.

关 键 词：覆膜方式 玉米 灌水量 土壤环境 产量 

分 类 号：S27[农业科学—农业水土工程]