采叶对银杏生长发育的影响

Influence of picking leaf to growth of Ginkgo biloba L.

对银杏３年生幼树采叶后，对新梢长度和粗度影响明显，平均长度减少３１．３％，新梢基部粗度减少１８．２％，且大叶发生数量减少；对成熟的雄株采叶，不利花的正常发育，会造成花粉数量和质量下降；对成熟的雌株采叶，会引起树势减弱，果型缩小，产量下降，总产约减产２９．８％。

The influence of picking leaves to the length and diameter of new growth of 3 years old trees of Ginkgo biloba L. is significance.The average length droped down by 31 3%,the new growth basal diameter went down by 18 2% and the number of large leaf reduced.The flowernormal development was influenced and the quantity and quality of anther dust reduced for picking leaf in mature staminiferous plant.The strength of tree went down, fruit size reduced , the fruit yield went down and total yield reduced by 29 8% for picking leaf in mature female plant. Authors address Rugao City Diversified Bureau, Jiangsu 226500 PRC