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
张秉善1
作者信息
- 1. 民乐县海潮坝河水利管理处,甘肃 民乐 734500
- 折叠
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.
Abstract
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-hydro-lyzed nitrogen,available phosphorus and available potassium were higher than that in the control,and the soil nutrients under drip ir-rigation 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Key words
irrigation method/arid region/cultivated land/soil nutrients/distribution引用本文复制引用
出版年
2024
NETL
NSTL
万方数据