Effects of Drip Irrigation with Saline Water on Soil Water and Salt Distribution in Cotton Field under Full Film Mulching
Sun Zeqiang
Dong Liang
Wang Xuejun
Dong Xiaoxia
Zheng Dongfeng
Liu Zhaohui
Abstract：A field experiment with locating plots was carried out to research the changing dynamics and distribution characteristics of soil water and salt in cotton fields via drip irrigation with saline water under full film mulching.Different salinities of irrigation water were set with fresh water as control.The results showed that drip irrigation with salt water reduced the soil water content absorbed by cotton.The effect of HCO3 --Na+type water on water uptake of cotton root was greater than that of Cl --Na +type water.Soil water was af-fected by pre-irrigation water and its salinity, and the effects existed in the whole growth period.The EC val-ues in 0~100 cm soil layers were increased by all the irrigation treatments.The soil salinity increased with the salinity of irrigation water.Drip irrigation one time with water whose salinity was less than 6 g/L would not cause obvious accumulation of soil salinity in cotton root distribution layer through irrigation with the Yellow River water before planting and leached by rainfall in summer.
Keywords：CottonDrip irrigation with saline waterFull film mulchingDynamics of water and salt
Publication Date：2015-01-01
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：6( 55-60 )