Improvement of Soil Physical Properties with Soil Con-ditionersEnglish Full Text
ZHAO BING-ZI and XU FU-AN(Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008)( China
Abstract: Effects of non-ionic polyacrylamide（PAM）, anionic polyacrylamide（PHP）, cationic polyacrylamide （PCA-M）, non-ionic polyvinylalcohol（PVA）, anionic hydrolyzed polyacrylonitrile（HPAN） and polyethyleneoxide（PE-O） on the physical properties of three different soil types were studied. Content of water-stable aggregateslarger than 0.25 mm increased to varying extents for different soils and soil conditioners. Among the sixkinds of conditioners, non-ionic polyacrylamide（PAM） was the most effective for red soil while polyethyle-neoxide（PEO） the least effective for Chao soil, red soil and yellow-brown soil. Water-stable aggregatesincreased with the rates of PEO and PAM application （except for PEO treatment of yellow-brown soil） andwith the molecular weight of PEO within a certain range. Only evaporation rate of Chao soil decreased afterapplication of PAM and HPAN to Chao soil and red soil.
- Series：
(D) Agriculture
- Subject：
Fundamental Science of Agriculture; Agronomy
- Classification Code：
S152
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