【Objective】Variety improvement of Heiye litchi by top grafting was conducted to provide the best scion combination for litchi quality improvement and growth period adjustment in Guangxi. 【Method】Heavily retroactive pruned13 years old Heiye Litchi tree,12 litchi varieties such as Feizixiao, Guifeihong and Caomeili were top grafting.Survival rate, growth and yield after top grafting were compared and analyzed. 【Result】The results showed that the highest rate of graft living was Feizixiao(86.6%),then Guihuaxiang(74.6%)and Guifeihong(71.3%),and the lowest wasYingshanhong(17.1%)and Jizhuili(26.1%). Guiwei,Wuheli,Qinzhouhongli and Heli appear swelled in grafting position, grew weakly with yellow leaf blade and had no yield. Eight varieties, Guifeihong, Caomeili, Guinuo,Yingshanhong,Jizuili,Feizixiao and Mili, grew and produced fruit normally. The average yield per plant grafting after 4 years was around 15.0 to 49.5 kg. The highest was Feizixiao(49.5 kg)and the yield of Guifeihong was 40.6 kg.【Conclusion】With Guiluo, Yingshanhong, Guihuaxiang and Mili as scion grafted onto the intermediate stock ofHeiye,the affinity is good, hence they are the optimal scion combination.

Phonapate fimbriata Lesne was found to be a new pest for litchi in China in April,2012.It mainly caused damage to the forest,fruit trees and wood.The distribution,morphology,damage and management were reviewed in this paper,and the morphological figures of the male and female beetles were presented in detail.The paper would become the basis of the further identificatiion,surveillance,and management for that beetle in China.

The conifer auger beetle black borer Sinoxylon conigerum Gerstacker was one of a quarantine pests in the genera Sinoxylon(no native species) of entrance-exit in China.It mainly caused damage to the wood and relative products,forest,and fruit trees.This pest was recorded and found to infest in the litchi orchard for the first time in China in this paper.The distribution,morphology,host range and economic value,biology,spread,management,and potential threaten to China were reviewed and analysed.The risk level of the beetle was high for China.The morphological figures of adult beetles were presented.The paper would become the basis of the further identificatiion,quarantine,surveillance,and management for that pest in China.