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。
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 (P\-n), 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 P\-n, 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 P\-n of rice leaves, even in high light intensitivity and high temperature at noontime.
出处
《生态学杂志》
CAS
CSCD
北大核心
2003年第1期1-4,共4页
Chinese Journal of Ecology
基金
国家重点基础研究发展规划项目"973"(G19990 1180 2 )
中国科学院创新资助项目 (KICX -4 13 )
关键词
水稻
剑叶
光合特性
有机肥
无机肥
配施
配比试验
rice,organic manure,chemical fertilizers,photosynthesis charicteraistics.
