干旱区生态环境知识资源中心

Drip irrigation covered by plastic film has successfully been developed and applied over the area of 1.33 million hectares in Xinjiang, promoting that China is the largest area using drip irrigation technique in farming land. The paper concludes that salinity in soil profile formed the beneficial environment of cotton growth stages while it was affected by irrigation schedule, which was tested in cotton land using drip irrigation covered by plastic film in Irrigation Experiment Station in Bayingol Mongolian Autonomous Prefecture of Xinjiang. This water-saving technique is that drip irrigation combines with plastic film technique to realize compensation each other between controlling salinity in growth stages and draining salinity in non-growth stages by flexible application of controlled precision irrigation for the purpose of technical supporting of realizing the aim of control salinity using water-saving technology in arid area.