| 黄浦江水源保护区不同作物养分管理及环境效应分析 |
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| 引用本文： | 金海洋,姚政,徐四新,李丰平.黄浦江水源保护区不同作物养分管理及环境效应分析[J].上海农业学报,2007,23(4):47-51. |
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| 作者姓名： | 金海洋 姚政 徐四新 李丰平 |
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| 作者单位： | 1. 上海市农业科学院环境科学研究所,上海,201106
2. 湖北省沙洋监狱局农科所,荆门,448200 |
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| 基金项目： | IPNI国际合作项目;上海市科技兴农科技攻关项目 |
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| 摘 要： | 针对黄浦江水源保护区农业种植现状,调查分析3种大田作物和25种瓜果蔬菜的施肥结构和养分盈余状况。结果表明:除少数作物钾肥或磷肥施用多于氮肥外,绝大部分作物施肥结构中以氮肥为主,配施磷、钾肥。不同作物肥料用量强度分析表明:氮肥用量强度明显高于磷钾肥用量强度,大田作物氮、磷、钾用量强度都处在相对较低的水平,明显低于大部分蔬菜作物。不同作物养分盈余状况各不相同,大田作物N用量处于稍有盈余状态,P用量稍有亏缺或基本平衡。大田作物氮、磷盈余指数低,环境效应好。蔬菜作物中除少数作物N、P稍有亏缺外,大部分作物N、P均处于较高或高盈余状态。大部分蔬菜、瓜果作物氮、磷盈余指数高,环境效益差。
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| 关 键 词： | 黄浦江 水源保护区 养分平衡 养分盈余 环境效应 |
| 文章编号： | 1000-3924（2007）04-47-05 |
| 收稿时间： | 2007-01-08 |
| 修稿时间： | 2007-10-24 |
Study on nutrient balance of different crops and its environmental effects in the Sanitary Zone of Huangpu River |
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| JIN Hai-yang,YAO Zheng,XU Si-xin,LI Feng-ping.Study on nutrient balance of different crops and its environmental effects in the Sanitary Zone of Huangpu River[J].Acta Agriculturae Shanghai,2007,23(4):47-51. |
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| Authors: | JIN Hai-yang YAO Zheng XU Si-xin LI Feng-ping |
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| Abstract: | According to the situation of crop production in the Sanitary Zone of Huangpu River,the investigation was carried out on the composition of applied fertilizers and the nutrient balance state of 3 field crops and 25 vegetables and melons.It was found that the applied fertilizer was mainly N for most crops,and more P or K fertilizer than N fertilizer was applied only to a few crops.The amount of applied N fertilizer at a given time was obviously greater than that of applied P or K fertilizer.The intensity of N,P and K fertilizers applied to field crops was relatively low and obviously lower than that applied to most vegetables.The amount of N fertilizer applied to field crops was slightly surplus and the amount of P fertilizer applied to field crops was slightly deficient or basically balanced.The environmental effects were good for field crops due to low surplus indexes of N and P.Among vegetables only a few were slightly deficient in N and P,and most of them were much surplus in N and P.The environmental effects were poor for most vegetables and melons due to high surplus indexes of N and P. |
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| Keywords: | Huangpu River Sanitary zone of water source Nutrient balance Nutrient surplus Environmental effect |
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