| 废弃烤烟茎秆浸水后的腐解、养分释放特征及其对水环境的影响 |
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| 引用本文： | 熊德中,李 放,李素兰,贺 鹏,邹文桐.废弃烤烟茎秆浸水后的腐解、养分释放特征及其对水环境的影响[J].中国生态农业学报,2008,16(6):1513-1516. |
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| 作者姓名： | 熊德中 李 放 李素兰 贺 鹏 邹文桐 |
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| 作者单位： | 福建农林大学资源与环境学院,福州,350002 |
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| 基金项目： | 福建省教育厅科研项目
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福建省烟草公司资助项目
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| 摘 要： | 福建省烤烟茎秆数量达12万t.a-1,大部分弃于田头、沟渠、河流旁。浸泡试验表明,废弃烤烟茎秆用水浸泡,其干物质、有机质、氮、磷、钾均在浸水后的前10 d流失速度最快,流失率分别为34.52%、32.16%、24.15%、74.55%、79.46%;浸水至第60 d时,流失率则分别达50.05%、46.88%、68.68%、95.10%、95.76%。500 g烤烟茎秆(干物质量为135.197 g)浸于1.5 L水中60 d,水体中铵态氮含量为292.56 mg、硝态氮含量为35.68 mg,烤烟茎秆在浸水条件下流失的氮素大部分以铵态氮的形式存在于水体。试验样品浸水至第10 d、30 d、60 d时,水体COD含量分别为13.82 g·L-1、8.73 g·L-1、5.43 g·L-1。福建省1年生产的烤烟茎秆可造成5.33万t有机质、908 t氮素、247 t磷素、2 918 t吨钾素流失。
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| 关 键 词： | 烤烟茎秆 浸水 腐解 养分流失 水体污染 |
| 收稿时间： | 2/6/2008 12:00:00 AM |
| 修稿时间： | 2008/4/10 0:00:00 |
Decomposition, nutrient releasing characteristics and environmental effect of soaked tobacco stem waste |
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| XIONG De-Zhong,LI Fang,LI Su-Lan,HE Peng and ZOU Wen-Tong.Decomposition, nutrient releasing characteristics and environmental effect of soaked tobacco stem waste[J].Chinese Journal of Eco-Agriculture,2008,16(6):1513-1516. |
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| Authors: | XIONG De-Zhong LI Fang LI Su-Lan HE Peng and ZOU Wen-Tong |
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| Institution: | College of Resource and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China;College of Resource and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China;College of Resource and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China;College of Resource and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China;College of Resource and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China |
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| Abstract: | Annual output of tobacco stem in Fujian Province is 1.2×105 ton, most of which is piled on the fields, irrigation canals and river banks. Soaking experiment shows that the rate of nutrient loss from tobacco stems are maximum in the first 10 days after soaking tobacco in water; with dry matter, organic matter, nitrogen, phosphorus and potassium loss rates of 34.52%, 32.16%, 24.15%, 74.55% and 79.46% respectively. On the 60th day after soaking, nutrient loss rates are 50.05%, 46.88%, 68.68%, 95.10% and 95.76% respectively. When 500 g fresh tobacco stems (with 135.197 g dry matter) are soaked in 1.5 L water, ammonia and nitrate nitrogen content in water reaches 292.56 mg and 35.68 mg respectively. Most of the lost nitrogen from soaked tobacco stem is in the form of ammonia nitrogen. On the 10th, 30th and 60th day after the tobacco stems were soaked in water, COD of water is 13.82 g·L-1, 8.73 g·L-1 and 5.43 g·L-1 respectively. Annual loss of organic matter, nitrogen, phosphorus and potassium from tobacco stem in Fujian Province is 5.33 ×104 ton, 908 ton, 247 ton and 2 918 ton respectively. |
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| Keywords: | Tobacco stem Soaking Decomposition Nutrient release Water pollution |
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