Effects of Uncomposed Corn Straw on Improvement of Soil With Contineous Cropping in Plastic House

A field experiment was conducted to study the effects of uncomposed corn straw applied to contineous cropping in plastic house on the soil improvement and cucumber growth and development.The results showed that corn straw application could increase the organic matter and total porosity and decrease bulk density in the soil.The salinity ( EC ) of soil in plastic house was decreased by corn straw application. Production of fruit of spring cucumber was increased by 5.0%～10.1% and autumn cucumber by 11.7 %～26.9 % ,when 0.4 %～1.2 % of corn straw was applied.