论文部分内容阅读
皖北宿县紫芦湖地势低洼,常年雨季积水,旱季地下水位也常达一米左右,缺少排水出路。土壤为碱化黑土,PH 值8.5左右,全盐量一般不超过千分之二,上层土质粘重,一尺深左右开始有砂礓。1958—1959年进行河网化试点未竣工,排水仍然不畅。雨季易内涝,旱季缺少淡少源,基本上是一个封闭的水利系统。因此河网水含有大量盐碱,其主要成分见表1。河网水总碱度有显著的年变化,近两年变动在4—11毫克当量/
Suzu Lake in northern Anhui Suzu low-lying, perennial precipitation in the rainy season, the dry season groundwater level is often up to about one meter, the lack of drainage outlets. The soil is alkalized black soil, PH value of about 8.5, the total salt content of not more than two thousandths of the upper soil sticky weight, about a foot deep start sand 礓. 1958 - 1959 river network pilot unfinished, drainage is still sluggish. The rainy season is prone to waterlogging. In the dry season, there is a lack of less and less source, which is basically a closed water system. Therefore, a large amount of saline water river network, the main components shown in Table 1. Total alkalinity of river network water has a significant annual change in the past two years changes in the 4-11 mg eq /