欢迎访问《应用生态学报》官方网站,今天是 分享到:

应用生态学报 ›› 1999, Vol. 10 ›› Issue (3): 301-304.

• 研究论文 • 上一篇    下一篇

北方稻田生态系统养分平衡研究

罗良国, 闻大中, 沈善敏   

  1. 中国科学院沈阳应用生态研究所, 沈阳 110015
  • 收稿日期:1998-11-08 修回日期:1998-12-23 出版日期:1999-05-25 发布日期:1999-05-25
  • 通讯作者: 罗良国,男,1966年生,博士,主要从事农业生态学研究,发表论文多篇.E-mail:luoliangguo@263.net E-mail:luoliangguo@263.net
  • 基金资助:

    中国科学院/八五0重点项目(KJ85-06-01-02).

Nutrient balance in rice field ecosystem of northern China

Luo Liangguo, Wen Dazhong, Shen Shanmin   

  1. Institute of Applied Ecology, Academia Sinica, Shenyang 110015
  • Received:1998-11-08 Revised:1998-12-23 Online:1999-05-25 Published:1999-05-25

摘要: 1994~1996年研究了5种不同模式水稻田生态系统养分平衡及养分效率。结果表明,不同模式的水稻田生态系统中,N输入输出基本相抵,处于平衡状态;K输入输出稍有盈余,唯P施用量较输出高1倍,使土壤中P有所积累。通过合理水肥调控措施,使水稻单产有所提高,肥料和养分利用率也得到不同程度的提高.

关键词: 单作水稻, 稻田生态系统, 养分平衡, 养分效率

Abstract: The nutrient balance and efficiency in five rice field ecosystems were studied at the lower reach plain of Liaohe River from 1994~1996. The results show that the Ninput and output in various patterns of rice ecosystem were basically balance, little more for Kinput than output, and Pinput as twice much as its output. With rational management measures of fertilization and water-saving, the rice yield would be increased, and the nutrient efficiency would be enhanced to some extent.

Key words: Single-cropping rice, Rice field ecosystem, Nutrient balance, Nutrient efficiency