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试验地位于安徽肥东县桂和养牛场,选择6个地块作为消解床,新鲜奶牛粪采用均匀堆垄铺在消解床上。分析了60 d内奶牛粪便自然堆制和蚯蚓堆制2种处理方式的堆制物的理化性质。结果表明,蚯蚓粪p H、总碳、有机碳、全氮、全钾含量均低于传统的牛粪自然堆制物,全磷、速效磷、速效氮和速效钾均高于牛粪自然堆制物,蚯蚓粪的速效氮和速效磷占全氮和全磷的百分比均分别逐渐升高。由此认为,与自然堆制相比,牛粪蚯蚓堆制加快了堆制物矿化速率,提高了堆制物速效养分含量。
The experimental site is located at Guihe Cattle Farm in Feidong County, Anhui Province. Six plots are selected as digestion beds, and fresh cow dung is spread evenly on the digestion beds. The physical and chemical properties of the heap prepared by 2 ways of natural cow dung and earthworm composting within 60 days were analyzed. The results showed that p H, total carbon, organic carbon, total nitrogen and total potassium of vermicompost were lower than that of the traditional dung manure. Total phosphorus, available phosphorus, available nitrogen and available potassium were higher than that of cow dung natural pile The contents of available nitrogen and available phosphorus in vermicompost and vermicompost accounted for the percentages of total nitrogen and total phosphorus, respectively. Therefore, compared with the natural heap system, cow dung earthworm piled up speed up the mineralization rate of heap preparation, improve the quick-acting nutrient content of heap preparation.