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应用生态学报 ›› 1994, Vol. 5 ›› Issue (3): 256-262.

• 研究论文 • 上一篇    下一篇

农业系统中磷肥残效及磷循环研究 Ⅳ.农业系统磷循环的一个简单模型及其验证

陈实, 殷秀岩, 张璐, 沈善敏   

  1. 中国科学院沈阳应用生态研究所中国科学院成都山地灾害与环境研究所, 沈阳 110015
  • 收稿日期:1992-12-19 修回日期:1993-04-13 出版日期:1994-07-25 发布日期:1994-07-25
  • 基金资助:

    国家“七五”科技攻关资助

Residual effect of phosphorus fertilizer and phosphorus recycling in a farming system Ⅳ.A simple phosphorus recycling model in a farming system and its test

Chen Shi, Yin Xiuyan, Zhang Lu, Shen Shanmin   

  1. Institute of Applied Ecology, Academia Sinica, Shenyang 110015
  • Received:1992-12-19 Revised:1993-04-13 Online:1994-07-25 Published:1994-07-25

摘要: 根据辽西易旱区碳酸盐褐土上进行的6年P肥试验资料,建立和验证了一个简化的农业系统P循环模型。对4种施P对策进行长时间尺度的模拟预测表明,6年三次大剂量施P并辅以每年有机肥还田的施P模式固土壤有效P水平和施P利用率较高而优于其它模式。

关键词: 农业生态系统, P循环, 模型, 模拟, 危险性, 综合风险, 干旱, 防灾减灾能力, 脆弱性

Abstract: Asimple phosphorus recycling model is established and validated based on a six years field experiment conducted on a calsic cinnamon soil in West Liaoning. The long-term simulated prediction of four ways of applying phosphorus fertilizer shows that the applying P every six years with high rate and with pig manure recycled each year is better than other ways of P fertilization from the view of higher crop yield and soil available Plevel and greater recovery rate of applied P.

Key words: Agroecosystem, Phosphorus recycling, Model, Simulation, vulnerability, drought, danger, integrated risk, disaster prevention and mitigation capacity.