作　　者： ; ; ; ;

机构地区： 百色市林业局

出　　处： 《广西农业科学》 2006年第3期314-316,共3页

摘　　要： 为探讨龙眼发生严重小果现象的原因，对百色市绿银果场不同坡位、坡向及不同类型发生小果现象的石硖龙眼果树进行调查研究，结果表明，在谢花期间和谢花后8d内如遇上34．1～38．1℃的高温，可能会造成已正常授粉受精的胚胎发育中断，果实严重败育，形成小果；小果现象与树体营养供需矛盾无关。生产上在开花期、谢花期以及谢花后约10d内应密切注意天气预报，如出现34℃以上的高温，应及时采取降温措施，可有效克服败育现象，减少损失。 In order to know about the causes of occurring severely small size fruit phenomenon in Shixia Longan tree, different slope gradient, slope direction and types of occurring small size fruits were studied in Luyin fruit farm of Baise City. The result showed that the development of normally pollinated and fertilized embryo were intermitted and the fruits were severely abortive which led to the small size fruit, if met with high temperature （34.1-38. 1℃） during the flower withering period and within eight days after flower withering. The small size fruit phenomenon was unrelated to the contradiction of nutrients supply and demand. Attention should be closely paid to weather forecast at flowering, flower withering stage and ten days after flower withering, if the temperature is above 34℃, measures should be taken to decrease the temperature to reduce the abortion rate of fertilized fruit.

关 键 词： 龙眼 小果 异常高温 果实败育

领　　域： [农业科学] [农业科学]