摘要
香樟是长江中下游地区城市的常见绿化树种,樟颈曼盲蝽的成虫和若虫刺吸香樟嫩叶,受害叶片正反面出现不规则褐色角状斑,从而严重减少树冠的光合作用面积并导致树体营养衰弱,树叶提前脱落而影响城市园林景观。为探索樟颈曼盲蝽在全国及本地的风险情况,本研究依据林业有害生物风险分析指标体系,采用多指标综合评价法进行樟颈曼盲蝽的危害风险分析。当各项赋值以全国分布区为依据时,风险等级值即R值为1.62,表明樟颈曼盲蝽为中度危险性林业有害生物;然而,而当赋值以香樟种植普遍且樟颈曼盲蝽危害十分普遍的湖北分布区为依据时,R值为1.99,基本达到高度危险性林业有害生物等级,这一结果将为樟颈曼盲蝽的防治提供有力科学依据。
Mansoniella cinnamomi is a deciduous pest due to feeding on the leaves of Cinnamomum camphora ,which is one of the main afforestation tree species in the middle and lower Yangtze region, by its adult and nymph. Owning to the brownish keratoid spots caused by the pest ＇s piercing and sucking, the effective leaf area for photosynthesis decreases, and at last the plant vigor is weaken and the landscape is damaged. To investigate the risk status of this pest, multi--index method was employed to evaluate the risk of M. cinnamomi based on the forest pest risk analysis index system of China. When the values were assigned accoding to the nationwide distribution area, the risk result （R value） was 1.62 and M. cinnamomi was a moderate risk forest pest. However, when only Hubei province was consided, the R value was 1.99, which was very close to high risk level. In a word, this research results provided practical scientific evidence for the management of Mansoniella cinnamomi.
出处
《湖北林业科技》
2016年第6期45-47,共3页
Hubei Forestry Science and Technology
关键词
樟颈曼盲蝽
香樟
风险分析
有害生物
Mansoniella cinnamomi
Cinnamomurn camphora
risk analysis
pest
