| 我国热带地区胶茶鸡农林复合系统氮循环研究 |
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| 引用本文： | 孟庆岩,王兆骞,宋莉莉.我国热带地区胶茶鸡农林复合系统氮循环研究[J].应用生态学报,2000,11(5):707-709. |
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| 作者姓名： | 孟庆岩 王兆骞 宋莉莉 |
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| 作者单位： | 1. 浙江大学农业生态研究所, 杭州310029;
2. 中国农业大学生物学院微生物系, 北京100094 |
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| 基金项目： | 国家七部委生态农业试点县建设资助项目 |
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| 摘 要： | 以海南省文昌市典型的胶茶鸡农林复合系统模式为研究对象,以单作胶园、胶茶间作园为对照,采用定量研究与定性分析相结合的方法,研究其N循环规律.结果表明,胶茶鸡农林复合系统N循环率为43%,N输出量为196.5kg·hm-2,土壤N盈余量为237.6kg·hm-2,均最高.鸡子系统N产投比为91%,转化率较高.系统外N投入率比另两系统明显减少,系统内N循环量最大,为824.1kg·hm-2.该系统N循环活跃,具有较合理的N循环结构.
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| 关 键 词： | 农林复合系统 生态农业模式 N循环 胶-茶-鸡 Cd 稻田土壤 风险评估 稻米 |
| 收稿时间： | 1999-01-20 |
Ncycle of rubber-tea-chicken agro-forestry model in tropical area of China |
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| MENG Qingyan,WANG Zhaoqian,SONG Lili.Ncycle of rubber-tea-chicken agro-forestry model in tropical area of China[J].Chinese Journal of Applied Ecology,2000,11(5):707-709. |
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| Authors: | MENG Qingyan WANG Zhaoqian SONG Lili |
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| Institution: | 1. Agroecological Research Institute, Zhejiang University, Hangzhou 310029;
2. China Agriculture University, Beijing 100094 |
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| Abstract: | The N cycle of rubber-tea-chicken eco-agricultural model, a typical tropical agro-forestry system in Wenchang municipality of Hainan province, was studied with quantitative experiment and qualitative analysis, compared with rubber and rubeer-tea systems. The results showed that the N cycling rate, N output and soil surplus N of chicken garden were all the highest, being 43%; 196.5% kg.hm-2 and 237.6 kg.hm-2, respectively. The N output/input rate of chicken sub-system was 91%, and the transformation rate was very high. Compared with the other two systems, the chicken garden had a decreased external N input rate, and its internal cycling N was the highest, being 824.1 kg.hm-2. Rubber-tea-chicken agro-forestry system had a rational N cycling structure, and its N cycle was most active. |
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| Keywords: | Agro forestry system Eco agricultural model N cycle Rubber tea chicken |
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