河南农业科学2013，Vol.42Issue(8)：45-47,3.
膜下滴灌农田灌溉量对土壤盐分类型的影响
Influence of Irrigation Amount of Mulched Drip Irrigation on Type of Soil Salt
摘要
Abstract
To understand the change characteristic of soil salt and change mechanism of soil secondary salinity under the condition of cotton farm mulched drip irrigation in Xinjiang,a field experiment with 3 levels of irrigation amounts(3600 m3/ha,4200 m3/ha and 4800 m3/ha)was carried out to study the influence of irrigation amount of mulched drip irrigation on soil salt.Results showed that the content of total salt of soil decreased by 45.36 ％,57.94％ and 61.14％,respectively,with increasing irrigation amount.The types of negative and positive ions changed from Cl--SO42-and Mg2+-Na+ to SO42-and Na+,respectively,after irrigation,which made the main type of salt change from Na2SO4、NaCl、MgSO4、MgCl2 to Na2SO4.However,HCO3-and Na+were accumulated in soil with irrigation,which might result in soil secondary salinization or alkalization.关键词
土壤/盐分/灌溉量/膜下滴灌Key words
soil/ salt/ irrigation amount/ mulched drip irrigation分类
农业科技引用本文复制引用
谢海霞,龚江,何帅..膜下滴灌农田灌溉量对土壤盐分类型的影响[J].河南农业科学,2013,42(8):45-47,3.基金项目
公益性行业(农业)科研专项(200903001-04) （农业）
石河子大学自然科学与技术创新重点项目(ZRKX2009ZD02-2) （ZRKX2009ZD02-2）
