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我团属于高水位,重盐碱地,林地多属于弃荒地,一米土层内含盐量在3一5%,最高超过10%,经过耕种改良的土地,平均含盐量1.27%,全年平均地下水1.9米,灌溉前期三月份2.15米,灌溉期地下水1.45米.从而给绿化造林工作带来不利因素,造成“只见栽树,不见成林”,因此,在近两年内对于树种的选择,林地改良等进行了点滴试验和调查,现分别简结如下:
My group belongs to the high water level, heavy saline alkali land, mostly belong to abandon wasteland, the salt content in one meter soil layer is 3-5%, the highest is more than 10% .After improved cultivation land, the average salt content is 1.27% Groundwater of 1.9m, pre-irrigation of 2.15m in March and irrigation groundwater of 1.45m, which brings unfavorable factors to the afforestation work and results in “only seeing trees, but not becoming forests”. Therefore, in the past two years, the choice of tree species, Woodland improvement, etc. carried out a bit of test and investigation, are summarized as follows: