土壤改良剂对苏打盐碱土改良效果和对牧草发芽率的影响

Effect of Soil Ameliorant on Soda Sallne-Alkali Soils and Germination Percentage of Pasture Species

在实验室条件下,研究了3种盐碱土改良剂(美地那、康地宝、碱益康)的不同浓度对盐碱土的总盐分和pH值的影响。结果表明,3种改良剂均能明显地降低盐碱土的总盐分,且降盐效果随改良剂浓度增加而明显增强。但低浓度的改良剂对土壤pH值影晌不大。同时研究了8种牧草在改良后土壤上的发芽情况。研究表明：土壤改良剂可以明显改良土壤,使种子的盆栽发芽率明显提高,效果最好的是披碱草和羊草。

An experiment was conducted to study the effects of three soil ameliorants （Medina, Kangdibao and Gailiangji） with different concentrations on total salt content and pH value of saline-alkali soils. Result showed that these three ameliorants can significantly decrease the total salt content of saline-alkali soils, and the effect enhances with increasing concentrations of ameliorants. Low concentrations of ameliorants have little effect on soil pH value. Moreover, the germination percentage of eight species of pasture was studied after soil amelioration. It is concluded that soft ameliorants can evidently improve soil quality and germination percentage of petted plants for pasture species, especially for Elymus dahuricus and Leymus chinensis.