吉林、辽宁、山东、山西、河北、河南等省的试验和生产实践表明:在加强综合管理的基础上,山楂花期喷施赤霉素可提高座果率20%以上,增加单果重8%以上,是提高山楂产量的有力措施。但大量普遍使用的是赤霉素粉剂。近年来上海第十八制药厂生产了一种“赤霉素”乳剂,在山楂生产上尚 Experiments and production practices in Jilin, Liaoning, Shandong, Shanxi, Hebei and Henan provinces show that gibberellin sprayed at flowering stage can increase fruit set rate by more than 20% and increase single fruit weight by more than 8% on the basis of strengthening integrated management , Is to improve the production of hawthorn powerful measures. However, a large number of commonly used gibberellin powder. Shanghai Eighteenth Pharmaceutical Factory in recent years produced a “gibberellin” emulsion, Hawthorn production Shang Shang