牛粪与秸秆发酵堆肥全部或部分替代草炭的研究

Study on the Fermented Farmyard Manure from Cow Dung and Straw for Completely or Part Replacing Turf

为寻求可全部或部分替代烤烟漂浮育苗基质中的草炭资源，研究牛粪与秸秆不同配比以及添加不同生物菌剂对发酵产物腐熟程度的影响。结果表明，4个处理的有机质含量达55％，胡敏酸含量大于富里酸含量，T值小于0．60，pH7．09～7．21．可以认为达到腐熟，处理之间无显著差异。发酵腐熟的关键在于选择物料，调节碳氮比（C／N）在30～35之间，水分前期控制在60％左右，中后期控制在35％～50％，通过翻堆调节通气性。

The test was carried out to investigate effects of different mixed ratios of cow dung and straw and different biological fungus on the rotted degree of fermented products. The results show that the organic matter content of four treatments is up to 55% and its humic-acid content is more than its fulvic-acid content, T value is 〈 0.60 and pH is 7.09- 7.21, which expresses that the fermented products is at the rotted stage. The key method for the rotting of cow dung and straw is selecting the proper biological fungus, adjusting 30-35 of C/N, controlling 60% and 35%-50% of water content at the earlier and middle ferment stage respectively and adjusting ventilation by turning over the farmyard manure.