论文部分内容阅读
芒果扁喙叶蝉是海南岛芒果树的重要害虫之一。成、若虫为害花芽、叶芽、花穗、嫩梢,被害幼叶呈干枯状,同时分泌蜜露,招致叶片、果实及枝干表面发生烟煤病,由此给芒果种植业带来直接威胁。据室内饲养观察,此虫在海南岛那大地区年发生8代,以成虫在枝、叶上越冬;成虫在田间呈核心分布,一年中以6月份虫口数量最大。建议在一个果园中种植同一品种,合理修枝及喷射20％叶蝉散2000倍液进行防治。
Mango Bicolor leafhopper is one of the important pests of mango tree in Hainan Island. As the nymphs damage flower buds, buds, flower spikes, tender shoots, the young leaves are dry and withered, while honeydew is secreted, leading to the occurrence of bituminous coal diseases on the leaves, fruits and stems, thereby posing a direct threat to the mango farming industry. According to the observation of indoor feeding, the insect occurred in the large area of Hainan Island occurred 8 generations in order to adult worms in the branches, leaves overwintering; adults showed a core distribution in the field, a year in June the largest number of insect population. Proposed planting of the same species in an orchard, a reasonable pruning and spraying 20% leaf cicada scattered 2000 times for prevention and treatment.