枣头花期摘心效应的研究

通过形态指标调查和叶分析,研究了枣头花期摘心的效应,结果表明:摘心可促进枣头及二次枝的生长发育,提高座果率。当年平均每个二次枝的座果数量比对照多48％,摘心第二年的增产效果更为显著,鸡心枣和灰枣的座果数,摘心的比对照分别高225％和386％,其生理效应是摘心可提高枝叶H_2O_2酶活性和叶比重,光合作用加强,N、K含量增高,枝条营养水平提高,从而缓和了新梢生长和结果之间的矛盾。

STUDY ON THE EFFECTS OF PINCHING FOR GROWING SHOOTS OF CHINESE JUJUBE IN BLOOMING PERIOD

By means of surveying the morphological index of shoots and leer analysis, studies, were made on the effects of pinching for growing shoots of Chinesee jujube in blooming period. The results indicate that pinching promotes the growth and development of the secondary shoot of the pinched growing shoots and increases the amount of fruit set by 48% in first year, 225%(Hui Zao) and 386% (Ji Xing Zao) in the following year. The physiological effects of pinching is, that H_2O_2 euzyme activity and SLW,N and K_2O content, and photosynthetic rate of the leaf has been increased as compared with non—pinching ones.