| Effects of leaching salt on irrigation with harvested rainwater in accumulating salt orchards in semiarid regions |
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| DOI：10.7606/j.issn.1000-7601.2009.06.40 |
| Key Words: irrigation with harvested rainwater orchard soil leaching salt semiarid region |
| Author Name | Affiliation | | GUO Quanen | Institute of Soil Fertilizer and Water-saving GAAS， Lanzhou, Gansu 730070, China；College of Resources and Environment Northwest A ＆F University, Yangling, Shaanxi 712100, China | | MA Zhongming | Institute of Soil Fertilizer and Water-saving GAAS， Lanzhou, Gansu 730070, China | | WANG Yiquan | College of Resources and Environment Northwest A ＆F University, Yangling, Shaanxi 712100, China | | GUO Tianwen | Institute of Dry Land Agriculture GAAS, Lanzhou, Gansu 730070, China | | LIU Jun | College of Resources and Environment Northwest A ＆F University, Yangling, Shaanxi 712100, China | | NAN Lili | College of Grass Science Gansu Agricultural University, Lanzhou, Gansu 730070, China | | FU Yaolong | College of Resources and Environment Northwest A ＆F University, Yangling, Shaanxi 712100, China | | LU Junfeng | Institute of Dry Land Agriculture GAAS, Lanzhou, Gansu 730070, China |
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| Abstract: |
| 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+, HCO-3, CO2-3and SO2-4between before leaching and after leaching.The leaves that had withered marginally recovered gradually after leaching salt. |
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