不同栽培基质和激素对竹节树生长及生理生化的影响研究

通过不同的栽培基质和激素对竹节树（Carallia brachiata）幼苗进行处理，结果表明：不同基质间竹节树幼苗地径、叶片叶绿素b含量和质膜透性有显著差异（P<0.05）；不同激素间竹节树幼苗地径、叶片质膜透性有极显著差异（P<0.01），而苗高、叶绿素a、叶绿素b和总叶绿素含量差异不显著；传统基质60%黄心土+40%塘泥有利于竹节树幼苗苗高、地径生长，改良基质30%黄心土+30%菇渣+40%塘泥则对其生理生化指标有促进作用；使用激素可以提高竹节树幼苗地径、苗高生长，降低其质膜透性，100 mg/LIBA溶液可促进其苗高生长，IBA100mg/L+NAA 50mg/L可提高地径生长、降低叶片质膜透性。

Effects of Different Cultivation Substrates and Hormones on the Growth and Physiological and Biochemical Indexes of Carallia brachiata

The growth and physiological and biochemical indexes of Carallia brachiata were tested, treated with two cultivation substrates and three hormones. The results showed as follows. Different treatment of cultivation substrates has significant effects on theSground diameters and chlorophyll b as well as membrane permeability of seedlings, but it has insignificant effects on other indexes. Different treatment of hormones has significant effects on theSground diameters and membrane permeability of seedlings, but it has insignificant effects on seedling height and chlorophyll a and chlorophyll b and total chlorophyll. The optimal treatment for ground diameter, seedling height, chlorophyll a, chlorophyll b, total chlorophyll, membrane permeability was S1-H3, S1-H2, S2-H2, S2-H3, S2-H3, S1-H1, respectively.