鸡粪堆腐过程中有机态氮形态的动态变化

鸡粪堆腐过程中有机氮形态的变化及含量关系到堆肥的农业价值,研究其变化规律,是为生产高质量的有机肥提供理论依据。利用鸡粪和玉米秸秆为原料进行了堆腐试验,研究在堆腐过程中不同形态有机氮组分的变化规律。结果表明,堆腐过程中全氮,鸡粪先降低后增加,至堆腐结束下降了30.4%,玉米秸秆和玉米秸秆 鸡粪呈现增加的趋势,分别增加了4和2.4倍;THN/TN鸡粪先降低后增加,上升了7.9%,玉米秸秆和玉米秸秆 鸡粪呈下降的趋势,分别下降了40.56%和23.15%;AN/THN,鸡粪先增加后降低,下降了13.49%,玉米秸秆和玉米秸秆 鸡粪呈现缓慢上升,比开始增加了9.7和2.1倍;AAN/THN三处理在21d均达最低值,分别增加了1.5、5.1和4倍;ASN/THN,鸡粪下降了32.5%,玉米秸秆和玉米秸秆 鸡粪分别上升了5.4%和2.9%;HUN/THN,三处理均在21d达最高值,鸡粪上升了30.9%,玉米秸秆和玉米秸秆 鸡粪分别下降了46.2%和239%。由此得出鸡粪堆腐中添加秸秆能够提高全氮的含量减少氮的损失,增加AN/THN、AAN/THN、ASN/THN的值,降低HUN/THN的值,有机态氮的有效性增加。

Dynamic Change of Organic Nitrogen Forms during the Chicken Manure Composing

The change of organic nitrogen forms and contents have direct relation with worth of agriculture compost during the chicken manure composing. The paper dealt with the variational orderliness of them in order to provide theory according as producing organic fertilizer with high quality. Composting tests with chicken manure and corn stem as raw composting materials were conducted under inner room condition. Organic nitrogen forms were determined at different composting stages. The results indicated that the change of TN reduced at the primary period, then increased during the composting of chicken manure and reduced 30.4% at the end of composting, and increased all the time in the treatment corn stem and chicken added with corn stem, increased 4 and 2.4 times respectively; THN/TN was the same as the change of TN in the treatment chicken manure and increased 7.9% at last, reduced in the treatment corn stem and chicken added with corn stem and declined 40.56% and 23.15% respectively; AN/THN increased at first then decreased in the treatment chicken manure and decreased 13.49%, and increased gradually in the treatment corn stem and chicken added with corn stem, and increased 9.7 and 2.1times; AAN/THN reached the lowest content in the treatment chicken manure, corn stem and chicken added with corn stem in the 21st and increased 1.5,5.1 and 4 times; ASN/THN decreased 32.5% in the treatment chicken manure, increased 5.4% and 2.9% respectively in the treatment corn stem and chicken added with corn stem; HUN/THN reached the highest content in the three treatment in the 21st and increased 30.9% in the treatment chicken manure, decreased 46.2% and 23.9% in the treatment corn stem and chicken added with corn stem. So this kind of conclusion can be drawn that the content of TN heightened and increased the number of AN/THN?AAN/THN? ASN/THN, decreased the number of HUN/THN, therefore availability of organic nitrogen advanced during the composting chicken added with corn stem.