Evaluation the Effect of Different Soil Amendments on Physicochemical
Property of Soda Saline-alkali Soil and Crop Yield in Northeast of China
Abstract
Soil amendment is one of the most effective method to improve
saline-alkali soil. In this paper, we verify the effect of 13 kinds of
amendments and its combination on soil pH、metal cations
content、exchangeable Na+、exchangeable sodium percentage (ESP)in the
lab, and then choose the most 5 effective amendments both applying in
both dry and paddy field to evaluate their improvement on soda
saline-alkali soil and crop yield. The results showed that AL, AL + Z
and AL + ZH treatments could significantly reduce the pH in soil
solution and increase the content of metal cations. Z and ZH treatments
could adsorb metal cations in soil. Whether in dry or paddy fields, all
treatments could reduce the content of exchangeable Na+ in soil, and
decrease by 38.62% - 61.33% and 25.24% -71.53%, respectively; All
treatments could reduce soil exchangeable sodium percentage, and
decrease by 0.14 - 0.22 and 0.14 - 0.41, respectively; AL, AL+Z and
AL+ZH treatments could improve soil organic matter content; All
treatments could effectively improve the yield of crops, and increase
23.98% - 60.75% and 52.51% - 260.21%, respectively. The effect of AL
treatment was the best in dry field and AL + ZH treatment was the best
in paddy field of soda saline-alkali soil.