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猪粪、稻草、菌剂混合堆肥与单纯猪粪堆肥对比试验,定量化研究了堆肥过程中不同阶段各种形态氮素转化和氮素损失途径。结果表明,在猪粪中添加稻草和菌剂堆肥,全氮损失减少,损失量为38%,其中氨态氮损失占氮总损失量80%,有机氮损失占氮总损失量21%;而单纯猪粪堆肥其氮素损失78%,其中氨态氮损失占氮总损失量38%,有机氮损失占氮总损失量59%。堆肥过程中主要是氨态氮和有机氮的变化,硝态氮变化较小。
Pig manure, rice straw, bacterium mixed compost and pure pig manure composting test, and quantitatively studied the various forms of nitrogen transformation and nitrogen loss in different stages of composting process. The results showed that the total nitrogen loss was reduced by 38% with the addition of rice straw and microbial agent composting, of which ammonia nitrogen loss accounted for 80% of the total nitrogen loss and organic nitrogen loss accounted for 21% of the total nitrogen loss. Pure pig manure composted 78% of nitrogen loss, of which ammonia nitrogen losses accounted for 38% of total nitrogen losses, organic nitrogen losses accounted for 59% of total nitrogen losses. During composting, ammonia nitrogen and organic nitrogen were the main changes while nitrate nitrogen changed little.