不同覆膜方式对河西灌区小麦产量和土壤生态环境的影响  

Effects of Different Plastic Film Mulched Modes on Wheat Yield and Soil Ecological Environment in Hexi Irrigated Area

作　　者：胡志桥[1] 包兴国[1] 张久东[1] 马忠明[1] 

机构地区：[1]甘肃省农业科学院土壤肥料与节水农业研究所,兰州730070

出　　处：《灌溉排水学报》2014年第2期110-113,共4页Journal of Irrigation and Drainage

基　　金：国家公益性行业(农业)专项经费项目(20110305-04);国家科技支撑计划项目(2007BAD46B06)

摘　　要：基于大田试验，研究了不同覆膜方式（不覆膜、春覆膜、秋覆膜、秋覆膜覆土）对河西灌区小麦产量和土壤生态环境的影响。结果表明，与不覆膜处理相比，覆膜处理小麦产量提高26．4％～45．6％，其中秋覆膜和秋覆膜覆土处理小麦产量、基本苗数量、成穗数和收后主要农艺性状均最佳，小麦拔节期前耕层土壤（O～20cm）含水率增加了2．8％～5％；与不覆膜处理相比，覆膜尤其是秋覆膜，小麦苗期早上的耕层（O～15cm）地温提高了O～3℃，小麦拔节后期中、下午的耕层（O～15cm）地温降低了1～11℃，秋覆膜提高了小麦苗期早上的耕层地温，但降低了拔节后期中下午的耕层地温。Field experiment wheat yield and soil ecolog increased by 26.4%-45.6 ment without mulched In s were carried out to study the effect of different plastic film mulched modes on ieal environment in Hexi irrigated area. The results indicated that wheat yield % significantly in the treatment of plastic film touched compared to the treat- the treatments of autumn mulched and autumn mulched soil, the yield, basic seedlings, ear number, the best （0-20 cm） before jointing stage mulched; topsoil （0-15 cm） creased by 1-11 ℃ at jointin mulched. main agronomic characters were increased by about 2. 8% - 5% temperature lncreas g late stage in the the top, and topsoil water compared to the treatment ed by 0-3 ℃ at seeding stage in the morning, afternoon under plastic film muched, especially content without and de- autumn

关 键 词：秋覆膜 秋覆膜覆土 土壤温度 土壤含水率 

分 类 号：S512.1[农业科学—作物学]