摘要
为了有效防治苹果园内小青花金龟Oxycetonia jucunda Faldermann,作者系统地调查了成虫对苹果树Malus pumila花、叶的危害情况及其在苹果园浅土层内的种群分布规律。结果表明：小青花金龟成虫对苹果叶的平均危害率为32.02%,严重时达70%,显著高于对苹果花的平均危害率18.50%;小青花金龟成虫在浅土层内主要分布在以苹果树为中心0~40 cm半径内,随着半径的增加,虫口密度逐渐下降,半径0~40,40~80,80~120 cm范围内的虫口密度分别为28.03,12.79,8.95头/m2。
The horizontal distributions of Oxycetonia jucunda in the soil and its harm to the flowers and leaves of Malus pumila were studied in the apple orchard. The results showed that its adults mainly distributed in the range of 0-40 cm around apple trees. The population density reduced gradually with the increase of the distance from apple trees. The population density reached 28. 03,12. 79,8. 95 adults / m2 in the range of 0-40,40-80,80-120 cm around apple trees. Its harm to leaves was significantly greater than that to flowers,the average infestation rate of leaves was about 32. 02 %,which was significantly higher than that of flowers（ 18. 50 %）.
出处
《中国森林病虫》
北大核心
2016年第1期20-22,共3页
Forest Pest and Disease
关键词
小青花金龟
苹果树
水平分布
危害
Oxycetonia jucunda Faldermann
Malus pumila
horizontal distribution
harm
