Improvement Effect of Mixed Soil Improvement Material of PAM,Bentonite and Pretreated Product of Stalks on Soil
WANG Xingshu
LU Yingang
WANG Jiashun
LIAO Heng
Abstract：To improve structure of cultivated soil and nutrient content,corn stalks were used as raw material to mix the stalks fermented by microbial inoculum,bentonite and polyacrylamide(PAM) to a scale to fabricate soil improvement materials.Two kinds of mixing materials[straw(pulverized):bentonite:PAM=800:200:50],FQ[straw (pulverized):bentonite:PAM=800:200:50]were selected to conduct application rate test.And five treatments were set up,which were FS1125[the inferior number indicates application rate(kg/ha),the same below],FS1875,FQ1125,FQ1875 and CK (no straw mixed soil modified material).The effect of the mixing soil melioration material on soil physical and chemical properties,maize yield were studied initially.The results showed that compared with CK,FS1875 treatment could significantly improve soil physical and chemical properties.Under the treatment of FS1875,the bulk density of soil was 1.20 g/cm3.The contents of available nitrogen,rapid available phosphorus and rapidly available potassium of soil were 127.72,61.12,177.6 mg/kg respectively.The content of organic matter of soil was 16.6 g/kg,which was 0.19 g/cm3 lower than that of CK.Compared with the CK,the contents of available nitrogen,rapid available phosphorus and rapidly available potassium of soil increased by 38.15％,38.24％,37.45％,34.96％,respectively.The yield of maize was 6 947.8 kg/ha,8.5％ higher than the control.On the whole,the treatment of FS1875 is the best,which can produce better economic benefits.
Keywords：polyacrylamidebentonitestrawmixed pretreatmentsoil nutrientphysicochemical properties of soilsoil improvement
Publication Date：2017-09-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：5( 62-66 )