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据两年来初步研究,看出如下粗略规律:1、硫酸盐为主的土壤,Cl~-与SO_4~-当量比在1:2—10范围内,发芽率决定盐分总量。2、植株与根层土壤电导率具有一定相关性。土壤盐分正常时,植株水浸液(1:40)电导率接近或大于土壤溶液(1:5)。当土壤盐分危及作物生长时,植株水浸液(1:40)电导率小于土壤溶液(1:5)。同时受害植株电导率高于正常植株。
According to preliminary research over the past two years, we can see the following rough rules: 1. Sulphate-based soils, the ratio of Cl ~ - to SO_4 ~ - is in the range of 1: 2-10, and the germination rate determines the total amount of salt. 2, plant and root soil conductivity has a certain correlation. When soil salinity is normal, the plant water-immersion (1:40) conductivity is close to or greater than the soil solution (1: 5). When soil salinity endangers the growth of crops, the conductivity of plant aqueous extracts (1:40) is less than that of soil solutions (1: 5). At the same time the victim plants higher than the normal plant conductivity.