秦岭林区锐齿栎林木个体生长分析

应用植物生长分析方法，通过破坏性取样，对锐齿栎林木的光合器官、非光合器官的生长过程以及物质生产效率进行了研究。结果表明，光合器官的增长过程与非同化器官的生长过程并不同步，锐齿栎在展叶的前２０ｄ内，主要靠消耗树体先年贮存的营养物质维持生长；展叶２０ｄ以后，生长则依赖当年的光合产物。

Individual Growth Analysis of Quercus aliena var.acuteserrata Trees in the Qingling Mountains

The growth processes of photosynthetic and non--photosynthetic organs and the drymater production rate of Quercus aliena var. acuteserrata trees were approached by means of destructive sampling and the method of plant growth analysis. The results showed that the photalsynthetic organs and the non--photosynthetic organs are out of step in their growth processes. Inthe first 20 days after leaf emergence, the growth of Quercus alibis var. acuterrnta mainly depends on the nutrients accumulated during the former year. However, 20 days later its growth ismaintained by the photosynthetic substances during the same year.