酶对牛粪堆肥物质转化的影响（摘要）（英文）

目的]研究复合酶添加对牛粪堆肥组分的变化。方法]试验设置2.0%酶处理组、1.5%酶处理组和对照组,对牛粪堆肥期间的温度、水分、pH值、粗纤维、总有机碳（TOC）、全氮（TN）和发芽指数（GI）进行分析。堆肥含水量测定采用烘干法;粗纤维测定采用酸碱法（以风干物料中的含量来计算）;总有机碳测定采用重铬酸钾容量法;全氮测定采用凯氏定氮法;pH值用S-3C型pH计测定,测定溶液为1：5固液比的浸提滤液;GI测定是将上述滤液10 ml置于垫有滤纸的培养皿中,同时设置空白对照（蒸馏水）,每个培养皿内放10粒饱满的小青菜种子,然后将其置于30℃培养箱中培养,48 h后测定发芽率和根长,计算发芽指数（GI）。结果]添加复合酶牛粪堆肥可加速堆肥前期有机物的降解。堆肥期间,2.0%酶处理组、1.5%酶处理组和对照组的粗纤维降幅分别为49.6%、47.0%和29.1%,TOC降幅分别为41.7%、35.3%和21.1%,全氮降幅（前21 d）分别为32.6%、26.8%和19.2%。2.0%酶处理组和1.5%酶处理组堆肥30 d可达到基本腐熟的程度。结论]复合酶的添加缩短了堆肥周期,有利于牛粪堆肥的腐熟。

Effects of Enzyme on Material Transformation of Cow Dung Compost

Objective] The aim was to study change of the composition of cow dung compost by adding complex enzyme.Method] 2.0% enzyme treatment group,1.5% enzyme treatment group and control group were set to analyze temperature,moisture,pH value,crude fiber,TOC,TN,GI during composting.Result] The results showed that adding complex enzymes could accelerate degradation of organic matter in pre-composting period.Crude fiber of 2.0%,.1.5% enzyme treatment group and control group decreased 49.6%,47% and 29.1% respectively,TOC decreased 41.7%,35.3% and 21.1%,TN decreased 32.6%,26.8% and 19.2%.2.0%,1.5% enzyme treatment groups could reach basic maturity degree at 30 d.Conclusion] Composting cycle be shortened by adding complex enzymes,which was useful for maturity of cow dung compost.