中文摘要：

应用植物高活性剂10mg·L^-1、5mg·L^-1、2．5mg·L^-1和1．25mg·L^-1对储良、古山和石硖品种龙眼进行试验，结果表明：（1）平均单果重比对照提高15．28％～23．85％、20．03％～36．47％和32．94％～45．10％；（2）果实的可溶性固形物比对照提高4．74％～15．01％、-15．18％～1．92％和-3．95％～13．16％；（3）果实的裂果率比对照降低了59．26％-100％、81．12％～100％和97．24％～98．90％，植物高活性剂防裂果效果显著；（4）应用植物高活性剂可显著提高龙眼产量，改善品质，提高果实商品率．

英文摘要：

The plant high-active agent were applied by using 10 mg · L-1, 5 mg · L-1,2. 5 mg· L-1 and 1.25 mg· L-1 to Longan, the result showed： （1）the average fruit weights of longan by using plant high--active agent were increased by 15.28%-23.85%, 20.03% -36.47% and 32.94% -45.10% ; （2） the soluble solids of were increased by 4. 74%-15.01%, -15. 18%-1.92% and -3.95%-13.16% （3）compared to the control group, the average fruit cracking rates were reduced by 59.26% -100%, 81. 12%-100% and 97.24%-98.90%, by using the plant high-active agent be capable of control fruit crack- ing; （4） It is remarkable for using the plant high-active agent to increase longan yield and improve quality and boost the commodity rate of the fruit.