| 苏南地区农田养分循环特征及平衡调控途径 |
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| 引用本文： | 陈 欣,李萍萍,章熙谷.苏南地区农田养分循环特征及平衡调控途径[J].中国生态农业学报,1997,5(3):10-14. |
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| 作者姓名： | 陈 欣 李萍萍 章熙谷 |
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| 作者单位： | 浙江农业大学农业生态研究所 杭州 310029;南京农业大学农学系 南京 210095;南京农业大学农学系 南京 210095 |
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| 基金项目： | 国家教委博士点科研基金资助项目 |
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| 摘 要： | 从宏观计算和田间模拟试验两方面分析了江苏南部农田养分循环和平衡特征的变化趋势，农田养分投入结构由有机养分为主转向以无机养分为主，农田养分内循环变弱，农田养分平衡N素由亏损转为过剩，P由亏损转为持衡，但K素亏缺愈加严重。指出增加P、K肥投入，适当控制N肥投入，在机械化条件下增加有机肥的投入是合理调控该地区农田养分平衡的重要途径。
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| 关 键 词： | 农田养分循环 平衡调控 |
| 收稿时间： | 1996/10/27 0:00:00 |
Characters of untrient cycles and ways for regulating their balance in south Jiangsu Province |
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| Chen Xin,Li Pingping and Zhang Xigu.Characters of untrient cycles and ways for regulating their balance in south Jiangsu Province[J].Chinese Journal of Eco-Agriculture,1997,5(3):10-14. |
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| Authors: | Chen Xin Li Pingping and Zhang Xigu |
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| Institution: | Institute of Agroecology,Zhejiang Agricultural University,Hangzhou 310029;Department of Agronomy,Nanjing Agricultural University,Nanjing 210095;Department of Agronomy,Nanjing Agricultural University,Nanjing 210095 |
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| Abstract: | The dynamics of farmland untrient cycles and balance in the southern part of Jiangsu Province were analysed based on macro-calculation and field tests. The results show that the main nutrient input is changing from organic fertilizer to inorganic fertilizer;farmland internal cycling is being weakened;Nbalance is changing from deficiency to surplus,P from deficiency to equilibrium, while K is becoming more and more deficient. So dnhancing P and K input and limiting N input as well as increasing the return of organic matter to farmland by mechanization are important ways to regulate farmland nutrient balance in this region. |
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| Keywords: | Farmland nutrient balance Balance regulation |
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