半干旱山区积盐果园集雨灌溉洗盐效果研究  

Effects of leaching salt on irrigation with harvested rainwater in accumulating salt orchards in semiarid regions

作　　者：郭全恩[1,2] 马忠明[1] 王益权[2] 郭天文[3] 刘军[2] 南丽丽[4] 伏耀龙[2] 吕军峰[3] 

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,甘肃兰州730070 [2]西北农林科技大学资环学院,陕西杨凌712100 [3]甘肃省农业科学院旱地农业研究所,甘肃兰州730070 [4]甘肃农业大学草业学院,甘肃兰州730070

出　　处：《干旱地区农业研究》2009年第6期210-214,共5页Agricultural Research in the Arid Areas

基　　金：甘肃省自然科学研究基金项目(0803KJZA040);甘肃省国际合作项目(090WCGA902);甘肃省科技厅事业费项目(QS031-C31-23);IPNI中国项目

摘　　要：以甘肃省秦安县兴国镇郑川村盐分胁迫果园土壤为研究对象,研究了集雨灌溉对果园土壤剖面盐分离子和果树生长的影响。结果表明:在淋洗前后全盐(P=0.001<0.01)和水溶性Na+(P=0.000<0.01)有极显著的差异,Cl-(P=0.040<0.05)和水溶性Ca2+(P=0.045<0.05)有显著的差异,而K+、Mg2+、HCO3-、CO32-和SO42-在淋洗前后差异不显著。通过果园土壤淋洗,能够明显改善树体的生长状况,叶缘焦枯的叶片逐渐恢复正常。The object of study was the orchard soil in Zhengchuan Village of Xingguo Town in Qin＇ an County of Gansu Province under salt stress, with which a field irrigation experiment using harvested rainwater was carried out to determine effects of irrigation with harvested rainwater on salt and ions content in orchard soil profile and apple tree growth. The results show that there was a very marked difference between before leaching and after leaching on soil total salt（ P = 0.001 〈 0.01） and water-solubility sodium（ P = 0.000 〈 0.01）, and there was a marked difference on chlorine ion （P = 0.040 〈 0.05） and water-solubility calcium（ P = 0. 045 〈 0.05）. But there was little difference on water-solubility K＋, Mg2＋, HCO3-, CO32- and SO42- between before leaching and after leaching. The leaves that had withered marginally recovered gradually after leaching salt.

关 键 词：集雨灌溉 果园土壤 洗盐 半干旱地区 

分 类 号：S156.41[农业科学—土壤学]