荔枝龙眼较易裂果。特别是有些品种如糯米糍、大糙、黑叶荔等荔枝和乌圆等龙眼更严重,有时果破裂率达85%以上。防止荔枝、龙眼裂果应采取以下措施。一、防治病虫害。导致荔枝龙眼裂果的病因主要有荔枝龙眼的椿象和霜霉病。应分别在花前、幼果期及成熟期防治。可用90%敌百虫700倍稀释液,或10%氯氰菊脂3500倍稀释液或70%甲基托布津1000倍液防治。二、切忌偏施氮肥。氮肥过多会导致 Litchi longan easier to crack fruit. In particular, some varieties such as glutinous rice dumplings, rough, black leaf litchi and other longan and other more serious, sometimes rupture rate of 85%. To prevent lychee, longan crack should take the following measures. First, control pests and diseases. Litchi longan lead to cracking the main causes of litchi longan stinkbug and downy mildew. Should be in the pre-anthesis, young fruit and maturity control. Available 90% trichlorfon 700 times diluted solution, or 10% of cypermethrin 3500 times dilution or 70% thiophanate-methyl 1000 times prevention and treatment. Second, avoid partial nitrogen fertilizer. Too much nitrogen can cause it