amelioration

1.Strook believed that the synthesis tree to establishes the better soil amelioration system to have the help.

斯特鲁克认为，合树对建立更好土壤良系统有帮助。

2.We should consider that multiple addition or increase concentration of Krilium in field practice may strength the effectiveness of soil amelioration.

同时，野外良应该考虑多次少量施用或增加良剂浓度方法来增强良效。