１９９０～１９９１年在榕江果树场用防落素（对氯苯氧乙酸）、增产素（对溴苯氧乙酸）和增产灵（对碘苯氧乙酸）５０ｍｇ／ｋｇ，２５ｍｇ／ｋｇ两个浓度，设６个处理，以水为对照，于盛花始期喷冰糖橙、大红甜橙树冠。结果表明，增产素的效果最好。５０ｍｇ／ｋｇ，２５ｍｇ／ｋｇ的增产素分别提高甜橙座果率３９７４％～４９６９％和２５００％～２９４７％；５０ｍｇ／ｋｇ，２５ｍｇ／ｋｇ的防落素分别提高甜橙座果率３２４５％～３７０４％，２５００％～２５１７％，差异显著或极显著。增产素提高单株产量２９２６％～４６１６％；２５ｍｇ／ｋｇ的增产素增加果实Ｖｃ的幅度在４３％～８０９％。 During 1990-1991, two concentrations of 50 mg / kg and 25 mg / kg of triptolide (p-chlorophenoxyacetic acid), vinblastine (p-bromophenoxyacetic acid) , Set 6 treatment, the water as a control, in the beginning of the flower spritz sugar orange, red sweet orange crown. The results show that the effect of increasing production of the best. 50 mg / kg and 25 mg / kg of OPN increased the percentage of conzygous fruit of 3974% -4969% and 2500% ~ 2947%, respectively. The content of antinotin of 50mg / kg and 25mg / kg increased respectively Sweet orange fruit rate of 3245% ~ 3704%, 2500% ~ 2517%, the difference was significant or extremely significant. Increased production of prime yield increased 2926% ~ 4616%. Increasing yield of 25mg / kg increased the Vc of fruit from 43% to 809%.