中文摘要：

不同浓度的CaCl2溶液对不同品种龙眼进行应用研究，试验结果表明：（1）幼果期喷施CaCl2溶液，石硖和储良龙眼果实的裂果率分别为2．07％～0和2．72％～0，而对照分别达4．62％和10．69％，果实膨大期喷施CaCl2溶液，石硖、储良和古山龙眼果实的裂果率分别为2．04％～0、4．20％～0和4．32％～0，而对照分剐达4．62％、16．93％和14．33％，CaCl2溶液能有效地防止果实裂果，提高果实商品率；（2）喷施CaCl2溶液对龙眼果实的可溶性固形物和可食部分含量有影响，但影响效果不大；（3）喷施CaCl2溶液对龙眼果实的单果重影响不大．

英文摘要：

Three cultivars longan were treated with different concentration of CaC12 solutions, the re- sult shows： （1） the fruit cracking rates of Shixia and Chuliang longan were 2.07% -0 and 2.72% -0 spraying CaCl2 solution during young fruit comparing with the control reached 4.62% and 10.69%, the fruit cracking rates of Shixia, Chuliang and Gushan longan were 2. 04%-0, 4.20% -0 and 4. 32%-0 spraying CaCl2 solution during fruit expanding comparing with the control reached 4.62%, 16.93% and 14. 33%. Spraying CaCl2 solution can prevent the fruit cracking of longan effectively. （2） Spraying CaCl2 solution has a few influences on the soluble solid content and the edibility content of longan. （3） Spraying CaCl2 has no influence on the average fruit weight of Longan.