我室在应用赤霉素促进洋槐幼苗生长经验的同时,还使用了原儿茶酸,也获得了良好的效果。用50P.P.M.和100P.P.M.的原儿茶酸溶液喷射刚出土的洋槐幼苗、每隔五天一次,连续四次,21天后植株的生长情况如附表。从表中可以看出原儿茶酸对树苗的根、茎、叶都有 My room in the application of gibberellin to promote the growth of acacia seedlings experience, but also the use of protocatechuic acid, also obtained good results. The newly emerged acacia seedlings were sprayed with protocatechuic acid solution of 50P.P.M. and 100P.P.M. once every five days for four consecutive times. The growth of the plants after 21 days was as shown in the attached table. As can be seen from the table protocatechuic acid on the saplings of the roots, stems, leaves have