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Shihezi University (石河子大学) 2021

Effects of Degradable Film on Soil Water, Heat, Salt and Crops in Drip Irrigation Cotton Field in Extreme Arid Area

丁宏伟

Titre : Effects of Degradable Film on Soil Water, Heat, Salt and Crops in Drip Irrigation Cotton Field in Extreme Arid Area

Auteur : 丁宏伟

Grade : Master 2021

Université : Shihezi University (石河子大学)

Résumé partiel
In recent years,the massive application of mulching technology has greatly contributed to the rapid development of China’s agricultural economy, but it has also caused serious residual film pollution ;currently,water-saving irrigation and residual film management are seriously affecting the sustainable development of drip irrigated cotton fields under film in Xinjiang.In this paper,a 2-year field experiment was conducted in the extremely arid Hami basin to screen out the appropriate irrigation water and type of degraded film from24 treatments with the full combination of six mulching methods and four irrigation volumes,in order to provide theoretical references for water conservation and residual film management in local drip irrigated cotton fields.Method:A field experiment was conducted with Xinlong T6 in the growing season of cotton from 2019 to2020,setting up 6 film methods including 4 types of degradation films,no film(LD)and common plastic mulch(PE),4 irrigation treatments,and 24 treatments in total by complete combination design,each treatment was repeated 3 times.In this paper,the degradation performance of various degradation films and their effects on soil water,heat and salt,cotton physiological growth and yield quality were studied under W3 irrigation treatment,and then the economic efficiency indexes such as cotton yield,yield-to-input ratio and net income of various mulching treatments under different irrigation amounts were comprehensively evaluated

Mots clés : extreme arid area ;Degradation of film ;Soil hydrothermal salt ;Cotton growth ;Yield and quality ;Economic benefits ;

Présentation (CNKI)

Page publiée le 20 février 2022