论文部分内容阅读
马尾松蚜虫(学名待定)常见成虫有两种类型:有翅型蚜和无翅型蚜。近几年来,在我县丘陵区对马尾松危害普遍比较严重。两种蚜虫群集枝条,嫩芽,嫩枝条,松针叶,树主干吸食汁液。受害针叶和枝条较正常针叶枝条干硬,并排出大量粘液,布满树枝和针叶,招致烟媒病,引起早期落叶。随着烟煤病污层的堆积,整个枝条下垂,以致枯萎,严重影响马尾松的生长和材质。马尾松蚜虫在我县多分布于海拔300米以下的平原丘陇地区,海
Masson pine aphids (scientific name to be determined) There are two common types of adults: winged aphids and wingless aphids. In recent years, the damage to masson pine in our county hilly area is relatively serious. Two kinds of aphids cluster branches, shoots, shoots, pine needles, tree trunk sucking juice. Injured needles and branches than the normal needle branches hard and dry, and discharge a large number of mucus, covered with branches and needles, leading to tobacco disease, causing early deciduous. With the accumulation of bituminous coal smear layer, the entire branches droop, resulting in withering, seriously affecting the growth and material quality of Pinus massoniana. Masson pine aphids in my county and more distributed in the plains at an altitude of 300 meters Qiu Long area, the sea