本文選題：土壤鹽離子　切入點：土壤含水量　出處：《干旱區(qū)資源與環(huán)境》2016年05期 　論文類型：期刊論文

【摘要】：采用實際田間取樣、土樣實驗室分析以及統(tǒng)計分析等方法,對瑪納斯河中游耕地不同灌溉方式下棉田土壤主要鹽離子含量的變化進行定量分析。研究結(jié)果表明:漫灌方式下土壤中Cl-/SO2-4值在各土層均有上升趨勢,而滴灌方式下Cl-/SO2-4值在各土層表現(xiàn)出先上升后下降的趨勢,在6月有一個高點,但隨后下降到與4月相似的水平,表明漫灌方式比滴灌方式更易使得土壤的鹽漬化類型向氯離子類型轉(zhuǎn)變。研究結(jié)論對減緩?fù)寥利}漬化、指導(dǎo)灌溉施肥管理以及耕地的可持續(xù)利用均有積極意義。
[Abstract]:Actual field sampling, laboratory analysis of soil samples and statistical analysis were used. The changes of main salt ion contents in cotton soil under different irrigation methods in middle reaches of Manas River were quantitatively analyzed. The results showed that the Cl-/SO2-4 value of soil increased in all soil layers under the condition of diffuse irrigation. However, under drip irrigation, the value of Cl-/SO2-4 increased first and then decreased in all soil layers, and reached a high point in June, but then decreased to a level similar to that of April. The results showed that the soil salinization type was changed to chloride ion type more easily by the method of diffuse irrigation than by drip irrigation. The conclusion of the study has positive significance for slowing down soil salinization, guiding irrigation fertilization management and sustainable utilization of cultivated land.
【作者單位】： 陸地表層格局與模擬重點實驗室中國科學(xué)院地理科學(xué)與資源研究所;北京師范大學(xué)資源學(xué)院;石河子大學(xué)理學(xué)院;
【基金】：國家自然科學(xué)基金(41171083,U1203181)資助
【分類號】：S562;S156.41
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本文編號：1584665