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茶硬胶蚧[Tachardina theae(Gteen et Menn)]是近年来在部分茶区发生蔓延的一种茶树介壳虫,危害后招致严重煤病,造成茶叶减产,甚至茶树枯死。茶硬胶蚧在浙江一年发生一代,以雌成虫在茶树枝杆上越冬,翌年5月下旬盛见若虫。各虫态历期:雌成虫8个月,雄成虫最长1天,若虫60天左右,雄蛹10天左右。雌雄比例为1:1.22。营卵胎生繁殖,平均每雌繁殖量为167头。若虫全部寄生在枝杆上。若虫期防治以溴氰菊酯(5ppm)、辛硫磷(500ppm)和马拉硫磷(500ppm)效果较好。根据茶硬胶蚧危害后对茶树发芽和茶叶产量的影响,探讨了茶硬胶蚧的防治阀值。
Tachardina theae (Gteen et Menn) is a tea tree scale that has spread in some tea areas in recent years. It causes serious coal disease after it is harmed, causing the tea yield to decline and even the tea tree to die. Occurrence of hard rubber kelp in Zhejiang one generation a year to female adults in winter over the tea tree branches, the next year in May nymphs. The insect state duration: female adult 8 months, adult male longest day, nymph 60 days or so, male pupa about 10 days. Male and female ratio of 1: 1.22. Oviparous reproduction, the average per female reproduction is 167. Nymphs are all parasitic on the sticks. Control of nymphs with deltamethrin (5ppm), phoxim (500ppm) and malathion (500ppm) better. According to the impact of tea hard rubber kite on tea germination and tea yield, the prevention and cure threshold of tea hard rubber kite was discussed.