沼肥与化肥配施对不同质地棉田土壤酶活性的影响

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为了实现棉花经济施肥和农业废弃物资源化利用,试验在全生育期等氮量控制条件下,研究了沼肥与化肥配施对不同质地棉田土壤酶(尿酶、过氧化氢酶、蛋白酶和磷酸酶)活性的影响。结果表明,随着生育期的推进,不同施肥处理土壤土壤脲酶、过氧化氢酶、蛋白酶活性均呈先升后降的变化趋势,3种酶活性高峰均出现在花铃期;壤土中花铃期沼肥氮配施化肥处理的脲酶、过氧化氢酶、蛋白酶平均活性分别比单施尿素处理高16.3%,8.7%,10.7%;砂壤土中花铃期沼肥氮配施化肥处理的脲酶、过氧化氢酶、蛋白酶活性分别比单施尿素处理高15.2%,12
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