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应用生态学报 ›› 1996, Vol. 7 ›› Issue (2): 179-184.

• 研究论文 • 上一篇    下一篇

北方稻田生态系统研究Ⅰ.稻萍结合系统的结构研究

苏凤岩, 闻大中, 徐卿德, 李维光, 杨玉兰   

  1. 中国科学院沈阳应用生态研究所, 沈阳110015
  • 收稿日期:1995-10-25 修回日期:1996-01-08 出版日期:1996-04-25 发布日期:1996-04-25
  • 基金资助:

    中国科学院"八五"重大项目

Rice field ecosystems in northern China Ⅰ. Structural study of rice-Azolla combination systems

Sa Fengyan, Wen Dazhong, Xu Qingde, Li Weiguang, Yang Yulan   

  1. Institute of Applied Ecology, Academia Sinica, Shenyang 110015
  • Received:1995-10-25 Revised:1996-01-08 Online:1996-04-25 Published:1996-04-25

摘要: 经过连续5年的实验,研究了北方稻区稻萍结合系统的不同结构对细绿萍产量和水稻产量的影响.结果表明.随着萍种用量的增加,水田中萍的产量也明显增加;尽管宽窄行交替的水稻栽培结构也有利于萍产量的增加,但这样的结构可导致水稻减产3~7%.在北方单季稻地区建议采用30cm等行距的水稻栽培方式和325kg·hm-2(湿重)的萍接种量建立的稻萍结合系统.

关键词: 单季稻, 水田生态系统, 稻萍结合, 引种驯化, 狭叶红景天, 抗氧化能力, 挥发性组分, 活性物质

Abstract: The effects of different structures of rice-Azolla combination system on rice and Azolla productions are studied within a 5-years experimental period. The results show that Azolla production on rice fields is significantly increased with increasing Azolla inoculation.Though the Azolla production is increased on the fields with alternating wide and narrow row rice plantings, the rice yield is decreased by 3~7%. The structure with an equal row rice planting of 30cm and an Azolla inoculation rate of 325kg·hm-2 (wet weight) is recommended for developing rice- Azolla combination system in northern China.

Key words: Single-croppijng rice, Rice field ecosystem, Rice-Azolla combination, antioxidant capacity, introduction and acclimatization, Rhodiola kirilowii, volatile constituent, bioactive compound