新疆绿洲盐碱滴灌区域荒地土壤盐分变化

发布时间：2018-07-09 17:35

本文选题：绿洲 + 滴灌区域　；参考：《排灌机械工程学报》2016年08期

【摘要】：为研究新疆绿洲区盐碱地应用膜下滴灌技术是否对荒地土壤盐分质量比及组成产生影响,以新疆典型盐碱绿洲区域(玛纳斯河流域下野地灌区)膜下滴灌棉田之间荒地为例,通过2009—2013年的定点监测,分析了年际间0~140 cm土层盐分及盐分离子变化.研究结果表明受滴灌棉田灌溉影响,地下水位提升以及地下水矿化度增加,造成新疆绿洲盐碱滴灌区域荒地土壤盐分在4月中旬至10月中旬的增加量大于10月中旬至翌年4月中旬的降低值,盐分和SO_4~(2-),Cl~-,Mg~(2+),Ca~(2+),Na~+以及Cl~-/SO_4~(2-)和钠离子吸附比都在逐年递增;荒地土壤碱度逐年提升,阴阳离子组成也在逐年变化,但试验期间内研究区域荒地盐碱土类型一直属于氯化物-硫酸盐盐土.滴灌技术在绿洲区推广后,区域内的荒地成为农田排出盐分重要的聚集场所之一.
[Abstract]:In order to study the effect of under film drip irrigation technology on salt quality ratio and composition of wasteland soil in saline alkali land in Xinjiang oasis area, the salt content of 0~140 cm soil layer in interannual 0~140 cm soil layer was analyzed by the fixed point monitoring of the drip irrigation in the typical saline alkali oasis area (Manasi River Basin under field irrigation area). The results showed that the effect of irrigation on the drip irrigation cotton field, the elevation of the groundwater level and the increase of the salinity of the underground water resulted in the increase of the salt of the wasteland soil in the saline alkali soil of Xinjiang oasis from the middle of April to the middle of October. The salt and SO_4~ (2-), Cl~-, Mg~ (2+), Ca~ (2+), Na~ The adsorption ratio of Cl~-/SO_4~ (2-) and sodium ions increased year by year; the alkalinity of wasteland soil increased year by year, and the composition of yin and yang ions also changed year by year. However, the type of saline alkali soil in the research area was always chloride sulfate soil. After the drip irrigation technology was pushed into the oasis area, the wasteland in the area became the heavy salt of farmland. One of the places to gather.
【作者单位】：石河子大学水利建筑工程学院;石河子大学现代节水灌溉兵团重点实验室;
【基金】：国家自然科学基金资助项目(51369027) “十二五”国家科技支撑计划项目(2015BAD20B03) 石河子大学杰出青年培育项目(2013ZRKXJQ02)
【分类号】：S156.4

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