辽西地区玉米秸秆还田覆膜对土壤含水量的影响  

Effect of Maize Straw Returning with Film Mulching on Soil Moisture Content in Western Liaoning

作　　者：张柏习[1] 郝春英[1] 董晓文[1] 董波 吴晓文[1] 

机构地区：[1]辽宁省固沙造林研究所,辽宁阜新123000 [2]盘锦市林业技术推广站

出　　处：《防护林科技》2012年第5期1-2,23,共3页Protection Forest Science and Technology

摘　　要：为了研究辽西地区玉米秸秆还田覆膜对土壤水分含量的影响,在大田中设置了玉米秸秆不同还田量的试验。试验设计为4个秸秆还田量水平,对照为秸秆不还田。结果表明:不同秸秆还田量各处理0～40 cm土层土壤含水量和对照比较都有明显提高,而且除了600 kg.hm-2还田处理外,差异都达到了极显著水平,同一个处理土壤各层次之间的含水量多数差异都达到了显著或者极显著水平,且总体趋势表现为表层含水量低于中下层。但综合来看,还田量12 000 kg.hm-2效果最佳,适合在当地推广。In order to study the effect of maize straw returning with film mulching on soil moisture content in western Liaoning,the experiment of different applied amount for maize straw were set up. Experimental design is 4 levels of amount of straw returning , CK being no straw-amended treatments. Result shows that ： soil moisture of 0- 40 cm layer improve significantly compared with the control under different straw amount of each treatment ; differences all reach a significant level except straw-return treatment of 600 kg · hm^-2 ; differences of soil water content within different layers in one straw-amended treatment reach a significant or very significant level except individual level;the overall trend shows that surface moisture content is below than that of the lower middle class. But straw-return being 12 000 kg· hm^-2 obtain the optimal effect and should be extended for the local.

关 键 词：辽西地区 玉米秸秆还田 覆膜 土壤水分含量 

分 类 号：S714[农业科学—林学]