高分子化学地膜对盐渍土壤物理性质与水分蒸发效应
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S156.4

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国家自然科学基金项目(U1806215)、新疆生产建设兵团科技攻关项目(2019AB038)、江苏省重点研发计划项目(BE2018759)和开封市科技计划项目(1702012)资助。


Effects of Polymer Compound Film on Physical Properties and Water Evaporation in Saline Soil
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    摘要:

    选择聚丙烯酰胺(polyacrylamide,PAM)、壳聚糖(chitosan,CTS)、羟乙基纤维素(hydroxyethyl cellulo,HEC)等3种高分子化合物,以土壤表面喷洒高分子化合物溶液成膜的方式,研究了高分子化合物膜对盐渍土壤基本物理性质与水分蒸发的影响。结果表明:本研究选择的3种高分子化合物能够不同程度地降低土壤水分蒸发、提高土壤保水性能和显著抑制土壤盐分的表聚;利用主成分分析进行对比发现:PAM、CTS、HEC分别在20、80、80 kg/hm2用量下的土壤抑蒸控盐效果最佳,盐渍土表喷洒高分子化合物溶液成膜对盐渍土壤改良利用具有确切的正效应。

    Abstract:

    In this study focusing on 3 high polymers, i.e. polyacrylamide (PAM), chitosan (CTS) and hydroxyethyl cellulo (HEC), the effect of polymer compound film (formed by spraying polymer compound solution onto soil surface) on the basic physical property and evaporation of water in saline soil was studied. The results indicated that:the above 3 high polymer compounds reduced water evaporation in soil to different extents, improved soil water retention, and significantly inhibited salt accumulation in topsoil. According to principal component analysis, the dosage of PAM 20 kg/hm2, CTS 80 kg/hm2 and HEC 80 kg/hm2 led to the best evaporation and salt control in soil. Therefore, membrane formed by spraying polymer compound solution onto the surface of salt-affected soil truly can play a positive role in salt-affected soil improvement and utilization.

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高昊辰,焦爱萍,陈诚,刘广明,张凤华,王秀萍.高分子化学地膜对盐渍土壤物理性质与水分蒸发效应[J].土壤,2021,53(5):1057-1063. GAO Haochen, JIAO Aiping, CHEN Cheng, LIU Guangming, ZHANG Fenghua, WANG Xiuping. Effects of Polymer Compound Film on Physical Properties and Water Evaporation in Saline Soil[J]. Soils,2021,53(5):1057-1063

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