| 重金属Zn对农业废弃物静态高温堆腐过程中理化性质和水解酶活性的影响 |
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| 引用本文： | 郭星亮,谷洁,高华,秦清军,孙薇,陈智学,张卫娟,李海龙.重金属Zn对农业废弃物静态高温堆腐过程中理化性质和水解酶活性的影响[J].植物营养与肥料学报,2011,17(3):638-645. |
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| 作者姓名： | 郭星亮 谷洁 高华 秦清军 孙薇 陈智学 张卫娟 李海龙 |
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| 作者单位： | 1. 西北农林科技大学理学院,陕西杨凌,712100
2. 西北农林科技大学资源与环境学院,陕西杨凌,712100 |
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| 基金项目： | 国家自然科学基金,科技部星火计划,农业部"948"项目 |
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| 摘 要： | 以猪粪、麦秸、废菌糠为原料并接种复合微生物菌剂,在静态堆腐条件下,研究了重金属Zn对堆肥过程中理化性质和水解酶活性变化影响.结果表明,不添加重金属Zn处理(CK)达到无害化的温度要求;添加Zn处理后,低剂量Zn处理(Zn浓度为400 mg/kg)高温期(>50℃)只持续3 d,高剂量Zn处理(Zn浓度为1000 mg/...
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| 关 键 词： | 锌 农业废弃物 高温堆腐 理化特征 水解酶活性 |
| 收稿时间： | 2010-07-26 |
Effect of Zn on physicochemical characteristics and hydrolase activities during composting of agricultural waste in high temperature and static state |
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| GUO Xing-liang,GU Jie,GAO Hua,QIN Qing-jun,SUN Wei,CHEN Zhi-xue,ZHANG Wei-juan,LI Hai-long.Effect of Zn on physicochemical characteristics and hydrolase activities during composting of agricultural waste in high temperature and static state[J].Plant Nutrition and Fertilizer Science,2011,17(3):638-645. |
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| Authors: | GUO Xing-liang GU Jie GAO Hua QIN Qing-jun SUN Wei CHEN Zhi-xue ZHANG Wei-juan LI Hai-long |
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| Affiliation: | GUO Xing-liang1,GU Jie2,GAO Hua2,QIN Qing-jun2,SUN Wei2,CHEN Zhi-xue1,ZHANG Wei-juan2,LI Hai-long2(1 College of Sciences,Northwest A & F University,Yangling,Shaanxi 712100,China,2 College of Resources and Environment,China) |
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| Abstract: | An experiment was conducted using mixed materials of pig excrement, wheat straw and waste auricularia-bran to study the effect of the heavy metal zinc (Zn) on physicochemical characteristics and hydrolase activities during composting at high temperature and static state. The CK treatment (without added Zn) achieved the requirement for harmlessness; the harmless degree of the low Zn treatment (L;Zn concentration 400 mg/kg) was not perfect, as the high-temperature phase (50C) only lasted 3 d. The high Zn treatment (H;Zn concentration 1000 mg/kg) did not achieve the requirement for harmlessness. The effect of Zn on electrical conductivity was mainly in anaphase of the calefactive phase, high-temperature phase, and the initial stage of the hypothermic phase. The effect of Zn on pH was mainly in the high-temperature phase, and only CK was in the optimal pH range (7.5~8.5). Analyses of hydrolase activities indicated that the low Zn treatment showed an activation effect on cellulase activity, while the high Zn treatment had a depressive effect on the high-temperature phase. Addition of Zn (both L and H) showed a negative effect on the hypothermic phase. Addition of Zn (both L and H) showed an activating effect on protease activity in the initial phase of composting (0?4 d). Protease activity in the high Zn treatment was significantly higher than that of the CK treatment. Both L and H treatments showed a negative effect on protease activity in the high-temperature and hypothermic phases. Addition of Zn (both L and H) showed an activating effect on urease activity in the initial phase of composting,but produced a negative effect and hampered the acidamide conversion process in anaphase of composting. |
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| Keywords: | zinc agricultural waste high-temperature composting physicochemical characteristics hydrolase activity |
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