赤霉素和多效唑对榛子雌雄花数量的影响

了解决生产实践中榛子雌雄花比例不当问题，以北京市昌平区杂交榛‘达维’为研究对象，分析了赤霉素和多效唑2种植物生长调节剂对杂交榛雌雄花的影响。根据2010-2011年的田间试验结果，综合运用SPSS 18.0对数据进行方差分析。结果表明：（1）赤霉素对雌花芽数量影响不显著，显著减少雄花序数量，提高雌雄比例；多效唑显著减少雌花芽数量，对雄花序数量没有显著影响，降低雌雄比例。（2）杂交榛‘达维’树体上中下雌雄分布：雌花芽数量下部>中部>上部，雄花序数量下部>上部>中部。各部位的雌花芽和雄花序数量差异不显著。赤霉素和多效唑处理的树体，上中下雌花芽和雄花序数量差异不显著。综上，对于杂交榛‘达维’一年生小枝，赤霉素显著抑制雄花序数量，提高雌雄分化比例；多效唑显著减少雌花芽数量，降低雌雄分化比例。杂交榛‘达维’雌雄花在树体的上、中、下分布差异不显著。

Effect of GA and MET on the Numbers of Male and Female Flowers of Corylus chinensis

In order to solve the practice production of female and male flowers of improper proportion of hazelnut. As the hybrid hazel 84-254 （‘David＇） grown in Changping of Beijing for the object of study, analysis of GA and MET two plant growth regulators on the impact of male and female flowers of hybrid hazel. According to the results of field trims in 2009-2010, use of SPSS 18.0 analysis of variance of data, we thought that： （1） GA had no significant effect on the number of female flower buds, significantly reducing the number of male inflorescence, increased the proportion of male to female; MET significantly reduced the number of female flower buds, had no significant effect on reducing the number of male inflorescence, reducing the proportion of male to female. （2） The distribution of male and female on the tree of hybrid hazel 84-254 （‘David＇）, the number of female flower buds lower 〉 middle 〉 upper; the number of male inflorescence lower〉 upper 〉 middle. The number of female flower buds and male inflorescence was not significant difference on various parts of the tree. As the trees GA and MET treated, the distribution of the number of female flower buds and male inflorescence on different part of it was not significant. For the annual twig on hybrid hazel 84-254 （‘ David＇）, GA significantly inhibited the number of male inflorescence, increased the proportion of male to female. MET significantly reduced the number of female flower buds and reduce the proportion of male to female. The number of female flower buds and male inflorescence on ‘ David＇ was not significant difference on various parts of the tree.