The Study Of The Effect In Improvement Of Alkaline Soil With Liquid-amendment (Kangdibao,Yanjianfeng)

This text point is the most basic theories studying on liquid-amendment(Kangdibao ,Yanjianfeng )improving alkaline-- soil ,So gather the representative alkaline soil into soil column with various density amendment—liquid (water +amendment )for model test inside and analyze the eight ions CO32- ,HCO3- ,SO42- ,CL- ,Ca2+ ,Mg2+ ,K+ ,Na+ in the filtrate through chemical experiment.The first step makes sure the basic composition of two kinds of amendment ,understanding its basic form ；Compare improving effect (physical process ,chemical process )between the two kinds of amendment under the different density ；passing the potted plant experiments ,the biggest usage density that make sure ；Understanding the influence to soil soon effect N,P,K under providing amendment,The result showed that soil—amendment(Kangdibao,Yanjianfeng)could improve effect on availability of nitrogen and phosphorus ,and decrease effect on potassium ；Combining gypsum with amendment that improve alkaline soil ；tall up the beneficial technique measure to guide the work in field.