摘要
为了给阿夏省级自然保护区中华松针蚧(Matsucoccus sinensis)预测预报和防控提供科学依据和参考,采取在不同海拔、坡向设置代表性固定样点、定期观察和样地调查的方法,研究了阿夏省级自然保护区油松林中华松针蚧发生与危害的空间分布、危害程度及其与降水、海拔、林地郁闭度等的关系,结果表明,该保护区油松林中华松针蚧发生范围及危害程度与海拔、坡向、温度、湿度和连续降雨等密切相关,随生长季(4-9月)降水次数、降水量的增加,发生面积和重度受害面积减少;与阴坡相比阳坡受灾面积大、受害程度重;海拔1900~2700 m均有分布,海拔1900~2450 m之间虫口密度大、危害重;建议加强对海拔1900~2600 m区间阳坡油松林中华松针蚧的监控与防治,以及对月平均气温、湿度及连续雨天次数的监测,及时调整防治策略。
To understand the occurrence of Matsucoccus sinensis at different altitudes and under different meteorological conditions,the relationship between the occurrence and the influencing factors was studied to improve the accuracy of forecasting and to provide a reliable basis for scientific prevention and control.According to the vertical and horizontal spatial distribution,the monitoring standard plots with different elevations and slope directions was set up in the pine forest,and the temperature,humidity and rainfall conditions were investigated,the number and damage degree of different populations of Matsucoccus sinensis were recorded,and the influence of different factors on population density was analyzed.The result showed that the occurrence scope and damage degree of Matsucoccus sinensis were closely related to altitude,slope direction,temperature,humidity and continuous rainfall.The distribution of Matsucoccus sinensis ranged from 1900 m to 2700 m in elevation and was densely distributed from 1900m to 2450 m.With the frequency and intensity of rainfall increasing from April to September,the insect occurrence as well as its harming area declined.Pine trees growing in the sunny slopes suffered more severe.It is suggested that measures should be strengthened in the control of Matsucoccus sinensis with pine forest on the sunny slope with elevation from 1900m to 2450m,in the monitoring of the monthly average temperature and humidity and the number of consecutive rainy days in order to adjust the control measures.
作者
张成都
李丹春
杨静
张成安
丁娅萍
丁全定
ZHANG Cheng-du;LI Dan-chun;YANG Jing;ZHANG Cheng-an;DING Ya-ping;DING Quan-ding(Bailongjiang A'xia Provincial Nature Reserve Administration, Diebu, Gansu 743400;Gansu Bailongjiang Forestry Institute, Lanzhou, Gansu 730000)
出处
《陕西林业科技》
2022年第1期40-43,共4页
Shaanxi Forest Science and Technology
基金
重大林木害虫风险分析及无公害防治技术研究项目(2019kj074)
2021年中央财政林业改革发展资金补助项目(甘林规函〔2021〕715号)。
