不同灌溉方式对干旱区耕地土壤养分及其分布的影响  

Effects of Different Irrigation Methods on Soil Nutrients and Distribution in Arid Land

作　　者：张秉善 Zhang Bingshan(Haichaoba River Water Conservancy Management Office,Minle 734500,Gansu,China)

机构地区：[1]民乐县海潮坝河水利管理处,甘肃民乐734500

出　　处：《农业技术与装备》2024年第3期39-41,共3页Agricultural Technology & Equipment

摘　　要：为研究不同灌溉方式对干旱区耕地土壤养分及分布的影响,试验以不灌溉为对照(CK),设置3种灌溉方式,分别为膜下滴灌(T1)、露地滴灌(T2)和覆膜沟灌(T3),研究了不同土层有机质、碱解氮、速效磷和速效钾含量的变化特征。结果表明,随着土层深度的增加,土壤养分呈逐渐降低的趋势,各处理的有机质含量均低于对照,碱解氮、速效磷和速效钾含量高于对照,且膜下滴灌处理的土壤养分含量最高。因此,在干旱区可采用膜下滴灌以提高土壤养分。In order to study the effects of different irrigation methods on soil nutrients and distribution in arid areas,three irrigation methods were set up,namely,under film drip irrigation(T1),open field drip irrigation(T2)and mulched furrow irrigation(T3),with no irrigation as the control(CK).The change characteristics of organic matter,alkali-hydrolyzed nitrogen,available phosphorus and available potassium in different soil layers were studied.The results showed that soil nutrients decreased gradually with the increase of soil depth.The contents of organic matter in all treatments were lower than that in the control,and the contents of alkali-hydrolyzed nitrogen,available phosphorus and available potassium were higher than that in the control,and the soil nutrients under drip irrigation were the highest.Therefore,submembrane drip irrigation can be used to improve soil nutrients in arid areas.

关 键 词：灌溉方式 干旱区 耕地 土壤养分 分布 

分 类 号：S158[农业科学—土壤学]