本文研究了秸秆覆盖条件下盐碱地土壤水分、盐分、温度和肥力变化状况及其对玉米生长发育与产量的影响.连续三年试验结果表明:秸秆覆盖田增加土壤含水量28.3kg~(-1);脱盐率达80%,表土含盐量维持在10gkg~(-1)以下;土壤有机质增加0.52～0.72gkg~(-1),物理、生物性状有所改善;覆盖地地温降低3.50℃,最终比露地增产玉米44.2～94.1%.盐碱地秸秆覆盖是一项改土增产的有效措施. In this paper, the effects of straw mulching on soil moisture, salinity, temperature and fertility and their effects on the growth and yield of maize were studied.The results of three consecutive years showed that straw mulching increased soil water content by 28.3 kg -1, ; Desalination rate of 80%, topsoil salinity maintained below 10gkg ~ (-1); soil organic matter increased 0.52 ~ 0.72gkg ~ (-1), physical and biological properties have improved; coverage of ground temperature decreased 3.50 ℃, the final 44.2-94.1% more yield corn than the open field.The straw mulching in saline-alkali soil is an effective measure to increase production of soil.