覆膜对晋南旱地冬小麦土壤水分及速效养分含量的影响  

Effect of Plastic Film Mulching on Soil Moisture and Available Nutrient Content of Winter Wheat on Rainfed Lands in Southern Shanxi

作　　者：赵晓东[1] 谢英荷[1] 李廷亮[1] 冯倩[1] 文德泽 贺丽燕[1] 贺璟[1] 

机构地区：[1]山西农业大学资源环境学院,山西太谷030801

出　　处：《山西农业大学学报（自然科学版）》2015年第3期262-265,289,共5页Journal of Shanxi Agricultural University(Natural Science Edition)

基　　金：国家公益性行业(农业)科研专项(201303104);山西省青年科技基金(2013021027-1)

摘　　要：为探明不同覆膜方式下,晋南旱塬冬小麦田土壤水分、速效磷及速效钾含量的变化情况,在山西省洪洞县冬麦区进行了大田试验.结果表明：平膜穴播和垄膜沟播这两种覆膜方式能提高0～80 cm土层土壤含水量,较相同施肥量的测控施肥分别提高17.2％和7.6％;并且水分利用率较相同施肥量的测控施肥分别提高28.47％和10.35％.而地膜覆盖对耕层土壤的速效磷和速效钾的影响不明显.综上所述,平膜穴播和垄膜沟播覆膜方式是减缓晋南冬小麦干旱缺水、提高土壤水分含量及水分利用率的重要措施之一.A field experiment was conducted in winter wheat area of Hongtong county,Shanxi province,in order to study the effect of plastic film mulching on soil moisture and available nutrient P and K of winter wheat.The results showed that,compared with the measurement-control treatment with the same fertilization level,flat film dibbling and the ridge film furrow sowing treatments could improve soil moisture content in the 0～80cm layer by 17.2％ 、7.6％,respectively;and their water use efficiency improved respectively by 28.47 ％、10.35 ％.Effect of plastic film mulching treatment on available P and available K content in the surface soil were not obvious.In conclusion,flat film dibbling and the ridge film furrow sowing treatments was one of important measures to mitigate drought and water shortage and to improve soil moisture content and water use efficiency of winter wheat in Southern Shanxi.

关 键 词：旱地小麦 覆膜 土壤水分含量 速效磷 速效钾 

分 类 号：S512.11[农业科学—作物学] S158.2