摘要
花生不同密度群体喷施三十烷醇和B9对光合效能有一定的影响：使叶面积指数在生长前期迅速提高，生长后期缓慢下降。延缓了叶片衰老和提高了叶绿素含量及净光合速率，增加了单株干物重及其在根系和荚果中的分配率，降低了干物质在茎叶中的分配率。喷施B9能降低群体密度间对中后期光合效能影响的差异。
The photosynthetic efficiency of coordinative application of triacontanol and B9 to peanut population in different densities were studied. The result indicated that it raised LAI rapidly in earlier stage and drowed down slowly in later stage. It increased leaf chlorophyl content, net photosynthetic rate, dry matter per plant, the distribution ratio of dry matter in root and pod but decreased that in stem and leaf. The population densities had a strong influence on photosynthetic efficiency in medium and later stage;but the use of B9 could weaken or even eliminate this kind of negative effect.
出处
《中国油料》
CAS
CSCD
北大核心
1997年第1期32-36,38,共6页
基金
学院课题
关键词
花生
植物生长调节剂
群体密度
光合效能
Peanut
Plant growth regulator
Population density
Photosynthetic efficiency
