不同类型地膜覆盖棉田效果比较

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本试验以降低投资,提高经济效益为目的,对于不同密度、不同颜色以及不同厚度的地膜,进行了田间效应试验,为进一步发展地膜覆盖栽培提供依据。一、试验材料和方法(一)供试地膜的类型不同类型地膜
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