论文部分内容阅读
通过室内饲养实验、杨树新品种汇集圃野外接种试验,观察11种具有速生性及其他优良品性的杨树品种对杨扇舟蛾、杨小舟蛾、杨毒蛾的天然抗性,并对林间栽植的各种杨树新品种进行病虫害种类、发生危害状况、天敌种类和数量进行调查。根据各种杨树害虫在杨树品种上的发生危害程度,将杨树分为高抗、中抗、易感三种类型,为推广、选择杨树抗性品种提供科学依据。
Through in-house feeding experiments, new varieties of poplar were collected for field inoculation experiments to observe the natural resistance of eleven poplar varieties with fast-growing and other good qualities to A. noctua, A variety of new varieties of poplar pests and diseases, the occurrence of hazardous conditions, species and quantity of natural enemies to investigate. According to the variety of poplar pests on the occurrence of the degree of hazard, the poplar is divided into high resistance, resistance, susceptibility three types, to promote poplar varieties to provide a scientific basis.