| 水田植物营养素的流失与控制措施 |
| 摘要点击 517 全文点击 431 |
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| 中文关键词 水田 植物营养素 控制措施 |
| 英文关键词 botanical nutrient paddy field control method |
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| 中文摘要 |
| 从水田流走的植物营养素在农业面源污染负荷中占主要部分, 关于它们流失方式的分析是寻求适当的控制措施减少污染负荷的前提.水田植物营养素的流失途径是降雨径流和灌溉回归水, 其浓度与土壤类型、作物状态和施肥等因素有关, 控制它的最佳途径是改进耕作制度. |
| 英文摘要 |
| The botanical nutrients running off from paddy tields occupy a dominant part in the agricultural non-point pollution loading. The analysis of running ways is the key to suitable control measures for reducing botanical nutrient loss from paddy fields. The ways of nutrient loss are rainfall run-off and irrigating return-flow, and the nutrient concentrations are dependent on soil types, crop growing and fertilizing etc. The best way for controlling the loss is to improve the methods of cultivation. |
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