Changes in biochemical properties of cow manure during processing by earthworms (Eisenia andrei, Bouche) and the effects on seedling growth
Changes in biochemical properties of cow manure during processing by earthworms (Eisenia andrei, Bouche) and the effects on seedling growth
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DOI：
10.1078/s0031-4056(04)70084-0
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发表时间：
2000-11-01
期刊：
影响因子：
2.3
通讯作者：
Edwards, CA
中科院分区：
文献类型：
--
作者：
Atiyeh, RM;Domínguez, J;Edwards, CA
在实验室控制条件下，测定了4个月内由安氏双头绦虫（Bouche）引起的新鲜牛粪中的生化变化。将蚯蚓引入四个装有新鲜牛粪（2500 g）的塑料容器（0.4 x 0.27 x 0.15 m）中，四个装有牛粪但不含蚯蚓的容器作为对照。蚯蚓降低了pH值，降低了粪便中的水分含量。有蚯蚓和无蚯蚓的粪肥的C：N比从36逐渐下降到21。的灰分和总氮含量大大增加了几个星期后，引进蚯蚓，反映了快速分解的碳化合物和氮的矿化的蚯蚓。在引入蚯蚓后一周，CO2释放迅速下降（44%），并且在整个17周内以较低的速率持续（与没有蚯蚓的22%相比，减少51%），表明有机物质的稳定性增加。蚯蚓减少了微生物生物量的早期过程中，但提高了氮矿化和提高转化率的铵态氮转化为硝酸盐。蚯蚓对有机废物的主要一般影响是加速有机废物的成熟，如生菜和番茄幼苗的生长促进所示。
The biochemical changes in fresh cow manure caused by the earthworm Eisenia andrei (Bouche) were measured over a period of four months, under controlled laboratory conditions. Earthworms were introduced into each of four plastic containers (0.4 x 0.27 x 0.15 m) containing fresh cow manure (2500 g), and four containers containing manure but without earthworms served as controls. Earthworms reduced the pH and decreased the moisture content in the manure. The C:N ratio of the manure with or without earthworms decreased progressively from 36 to 21. The ash and total nitrogen contents increased greatly for a few weeks after the introduction of earthworms, reflecting a rapid breakdown of carbon compounds and mineralization of nitrogen by the earthworms. CO2 evolution decreased rapidly (44 %) one week after the introduction of earthworms, and continued at a lower rate throughout the 17 weeks (51 % reduction as compared to 22 % without earthworms), indicating increasing stability of the organic matter. Earthworms reduced microbial biomass early in the process, but enhanced nitrogen mineralization and increased the rates of conversion of ammonium-nitrogen into nitrate. The major general effect of earthworms on the organic wastes was to accelerate the maturation of the organic wastes as demonstrated by enhanced growth of lettuce and tomato seedlings.