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低洼盐碱地重盐碱区域 ,以渔改碱挖池抬田时 ,在原地面铺设 1层塑料薄膜 ,利用其隔水的作用 ,阻断盐碱上升的通路 ,达到稳定性降盐碱的效果。试验分 3组进行 ,A组为好土台田 (含盐量 2 .40‰ )铺设薄膜 ,B组为好土台田不铺设薄膜 ,C组为重盐碱土 (含盐量 2 3 .5 4‰ )台田铺设薄膜 ,结果铺设薄膜的C组降盐碱效果明显 ,A组土壤含盐量逐渐降低并稳定在 1.5‰左右 ;B组土壤盐碱含量呈逐渐上升的态势 ,最高已达到18‰以上 ,证明薄膜有着良好的隔盐碱作用。
Low salinity salinization area of saline-alkali to fishery to alkali lift pool, the laying of a layer of plastic film on the original ground, the use of its role as a water barrier to block the rise of salt and alkali access to the stability of the effect of reducing salinity. The experiment was divided into 3 groups. Group A was a thin film of Haituoda (salt content 2.40 ‰), Group B was a thin film of Haotaota, and Group C was heavy saline soil (salt content 23.54 ‰ ) Field laying film, the results of the laying of the film group C salinity reduction significantly, A group of soil salinity gradually decreased and stabilized at about 1.5 ‰; Group B soil salinity was gradually increased, the highest has reached 18 ‰ Above, prove that the film has a good salt and alkali effect.