| 保山市农田生态系统养分循环与平衡研究* |
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| 引用本文： | 范茂攀,郑毅,李少明,毛昆明,尹胜鑫,周华波.保山市农田生态系统养分循环与平衡研究*[J].云南农业大学学报,2005,20(3):415-418. |
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| 作者姓名： | 范茂攀 郑毅 李少明 毛昆明 尹胜鑫 周华波 |
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| 作者单位： | 云南农业大学资源与环境学院 云南昆明650201
(范茂攀，郑毅，李少明，毛昆明)，云南省保山市土肥站 云南保山678000
(尹胜鑫)，云南农业大学资源与环境学院 云南昆明650201(周华波) |
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| 基金项目： | 云南省自然科学基金资助项目(2002C0040M) |
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| 摘 要： | 采用实地访问和田间调查典型区的设点方式，对云南省保山市主要作物施肥状况进行调查，并在此基础上对农田N，P，K元素输入输出的数量特征及其平衡状况进行了分析。结果表明，农田生态系统中N，P2O5的盈余量分别为148.9kg/hm2和93.8kg/hm2，钾（K2O）亏缺73.1kg/hm2，水田中的盈余量、亏缺量均大于旱地，应加强钾肥的施用。有机肥在肥料结构中的比例较小，应加大有机肥的投肥强度，增加养分再循环率，同时也有效地增加了钾肥的供应强度。
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| 关 键 词： | 农田生态系统 养分循环 平衡 |
| 文章编号： | 1004-390X(2005)03-0415-04 |
| 收稿时间： | 2004-11-22 |
Nutrient Cycling and Balance of Agro-ecosystem in Baoshan, Yunnan Province |
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| FAN Mao-pan,ZHENG Yi,LI Shao-ming,MAO Kun-ming,YIN Sheng-xin,ZHOU Hua-bo.Nutrient Cycling and Balance of Agro-ecosystem in Baoshan, Yunnan Province[J].Journal of Yunnan Agricultural University,2005,20(3):415-418. |
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| Authors: | FAN Mao-pan ZHENG Yi LI Shao-ming MAO Kun-ming YIN Sheng-xin ZHOU Hua-bo |
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| Institution: | FAN Mao-pan~1,ZHENG Yi~1,LI Shao-ming~1,MAO Kun-ming~1,YIN Sheng-xin~2,ZHOU Hua-bo~1 |
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| Abstract: | The farmers' household survey was carried out to investigate the fertilizer application on main crops in Baoshan, Yunnan Province. The nutrient balance of N,P and K in farmers' field was analyzed based on household survey dada. The results showed that the N and P_2O_5 inputs in agro-ecosystem were surplus of 148.9 kg/hm~2 and 93.8 kg/hm~2 respectively. The lack amount of K was 73.1 kg/hm~2. The proportion of organic manure in total fertilizer application was small. The nutrients in paddy field were more unbalanced than that in upland field. Therefore, the potassium fertilizer application should be recommended in both upland and paddy field. Application of organic manure should be strengthened in order to increase nutrient recycling and potassium supply. |
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| Keywords: | agro-ecosystem nutrient cycling balance |
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