本文選題：植穴結構控制　切入點：鹽漬土　出處：《干旱區(qū)資源與環(huán)境》2017年03期

【摘要】：為提高鹽漬土退化系統(tǒng)的綠化生態(tài)重建成效,須實施以穴尺度為單元的精準控制技術。運用L9(34)正交試驗設計方法,構建以耐鹽樹種、袋質材料、填料種類和沸石用量為自變量的植穴結構控制(PHCC)單元,測定各因素不同水平組合下土壤全鹽量,獲取各自變量對因變量的影響程度及最佳組合。結果表明:除耐鹽樹種外,其他因素對植穴內土壤全鹽量降低效果均極顯著,各因素的影響主次順序為:袋質材料填料種類沸石用量耐鹽樹種;如樹種選用絨毛白蠟、邊緣材料為反滲透膜、襯底材料為草炭、沸石用量為200g這一最優(yōu)因素水平組合,可使穴內全鹽量比穴外減低88.49~90.23%,其可靠性為95%。
[Abstract]:In order to improve the effect of greening ecological reconstruction of salinized soil degradation system, precise control technology based on cave scale should be implemented.The PHCC unit with salt tolerant tree species, bag material, packing type and zeolite content as independent variables was constructed by using L9C34) orthogonal design method. The total salt content of soil was determined under different combinations of factors.The influence degree and the best combination of their variables on dependent variables are obtained.The results showed that, except for salt tolerant species, the effect of other factors on the reduction of total salt content in the soil was very significant. The order of influencing factors was as follows: the amount of zeolite used in bag materials and fillers was salt tolerant tree species, for example, white wax was used in the tree species.
【作者單位】： 天津城建大學環(huán)境與市政工程學院;天津市水質科學與技術重點試驗室;
【基金】：天津科技支撐計劃重點項目(08ZCGYSF02500) 天津市科技計劃項目(12ZCZDSF01900)資助
【分類號】：S156.4;S731
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本文編號：1700343