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生态学杂志 ›› 2003, Vol. ›› Issue (1): 1-4.

• 研究报告 •    下一篇

有机-无机肥配施对水稻剑叶光合特性的影响

杨长明, 杨林章   

  1. 中国科学院南京土壤研究所, 南京210008
  • 收稿日期:2001-06-26 修回日期:2001-07-18 出版日期:2003-01-10
  • 基金资助:
    国家重点基础研究发展规划项目“973”(G1999011802);中国科学院创新资助项目(KICX-413)

Effects of combinded application of organic manure and chemical fertilizers on photosynthetic characteristics of rice flag leaves

YANG Changming, YANG Linzhang   

  1. Nanjing Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
  • Received:2001-06-26 Revised:2001-07-18 Online:2003-01-10

摘要: 研究和比较了不同养分投入方式对水稻剑叶光合作用和生理特性的影响。结果表明,不同性质肥料处理下的水稻剑叶光合速率(Pn)、叶绿素含量(Chl)和叶日积(LAD)有明显差异。有机无机肥料,特别是无机肥和厩肥配合施用可明显提高水稻生育后期剑叶的光合速率(Pn),延缓叶绿素chl的降解,并延长叶片光合功能期和截光时间,从而提高了水稻结实率、千粒重和籽粒产量。另外,在中午高温、高光强下,有机无机配施的水稻叶片也能保持较高的光合速率Pn。

关键词: 小菜蛾, 次生化合物, 生命表, 干扰作用控制指数

Abstract: The effects of different nutrient inputs on photosynthesis and physiologic features in the flag leaves of rice were studied and compared. The results showed that photosynthesis rate (Pn), chlorophll(chl) content and leaves area duration(LAD) were different under different nutrient treatments. Combinded application of chemical fertilizers and organic manure, especially barn yard manure, not only increase Pn, delay discomposition of (chl) in the flag leaves, but also prolong duration of photosynthetic function and light interception in late stages of rice growth. As a result, they bring increase in grain weight and grain yield. In addition, combinded application of organic manure and chemical fertilizers resulted in high Pn of rice leaves, even in high light intensitivity and high temperature at noontime.

Key words: Plutella xylostella, Secondary plant substance, Life table, Interference index of population control

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