CAO Li-hua, LIU He-man, ZHAO Shi-wei. Improvement Effects of Soil Amendments on Soil Water Retention Capacity in Loessial Soil[J]. Bulletin of Soiland Water Conservation, 2009, 28(1): 133-137.
CAO Li-hua, LIU He-man, ZHAO Shi-wei. Improvement Effects of Soil Amendments on Soil Water Retention Capacity in Loessial Soil[J]. Bulletin of Soiland Water Conservation, 2009, 28(1): 133-137.DOI:
and humic acid) on soil water retention capacity of Loessial soil are studied in a soil column experiment. Results show that the effects of the amendments on Loessial soil all conform to the equation for soil water content and soil suction. Under the condition of a single amendment
a value is increased with the amendment concentration in the range of 0.05%-0.4%. After 3 weeks or 2 months
a value also changes with the same amendment concentration in the amendment order of PAM > Wote super absorbent > β-cyclodextrin > humic acid. After 4 months
the order is PAM > Wote super absorbent > β-cyclodextrin > humic acid if concent ration is < 0.2% and the order becomes PAM > Wote super absorbent > humic acid > β-cyclodextrin if concentration is 0.2%- 0.4%.