CAJ | 학술논문

在新疆石河子121团膜下滴灌棉田进行了野外实验，共设置裸地和覆膜地2种处理地块，各个地块每次取土设3个重复，用烘干法测土壤含水率同时采用电导率仪测定土壤浸提液的电导率，然后换算成土壤的总含盐率。通过覆膜地与裸地的对比，分析了滴灌棉田有无积雪覆盖条件下水盐变化特征。结果表明，覆膜地土壤含水率与裸地变化规律类似，但变化幅度总体上小于裸地。在冻结期，覆膜有利于阻止盐分上移，而在融雪期，覆膜更易造成土壤盐分表聚。
재신강석하자121단막하적관면전진행료야외실험，공설치라지화복막지2충처리지괴，각개지괴매차취토설3개중복，용홍간법측토양함수솔동시채용전도솔의측정토양침제액적전도솔，연후환산성토양적총함염솔。통과복막지여라지적대비，분석료적관면전유무적설복개조건하수염변화특정。결과표명，복막지토양함수솔여라지변화규률유사，단변화폭도총체상소우라지。재동결기，복막유리우조지염분상이，이재융설기，복막경역조성토양염분표취。
This experiment was carried out to drop irrigation in cotton field of Regimental Farm 121 of Xinjiang Production and Construction Corps for field experimental,the bare and film were set up for 2 treatment plots,the soil moisture of the plots of each sampling from 3 replicates were measured by dr-ying method and the conductivity of soil extract were measued by conductivity apparatus,which then was converted into total salt content of the soil.In the comparison of film and bare,the change characteristics of water and salt in the cotton field with drip irrigation under the conditions with and without snow covering were analyzed.The result showed that the change law of soil moisture content of bare was similar to that of film,but the variation range was less than that of bare,on the whole,in the freezing period,film mulching could prevent salt move up.However,in snow melt period film mulching could easily cause salt accumula-tion in topsoil.