宜昌市不同海拔松褐天牛发生规律初步研究

Occurrence regularity of Monochamus alternatus at different altitude in Yichang

摘要:

摘 要： 为探明不同海拔地区松褐天牛发生规律，给松材线虫病防治提供理论依据和指导。2019～2020年通过在不同海拔设立试验点，对松褐天牛发生规律进行观测研究。结果表明，在海拔500～800 m松褐天牛数量最多，在海拔800 m以上松褐天牛数量最少。整株样木中，除伐桩外，其他部位均有松褐天牛，松褐天牛在被害树上的数量分布为树干中段>下段>上段>侧枝。因此，在5～7月开展松褐天牛防治，对控制松褐天牛虫口密度是一个关键期。

Abstract:

Abstract: In order to explore the occurrence law of Monochamus alternatus at different altitudes, to provide theoretical basis and guidance for the control of pine wood nematode disease. From 2019 to 2020, the occurrence law of M. alternatus was observed and studied by setting up experimental sites at different altitudes. The results show that the number of M. alternatus is the largest at altitude of 500 to 800 meters, at altitude of more than 800 meters is the least. In the whole sample tree, except the stump, there are M. alternatus in other parts, the number distribution of M. alternatus on the killed trees was middle section > lower section > upper section > lateral branch.The control of M. alternatus from May to July is a key period for controlling the population density.