论文部分内容阅读
茶跗线螨Polyphagotarsonemus latus(Banks)又名茶黄蜘蛛,黄茶螨,属蜱螨目跗线螨科,是茶树的重要害螨。嫩梢受害后期,叶背出现粗糙状的褐色斑,叶片背卷,芽叶萎缩,全年产量损失可达20％左右。我们自1973年以来,对此螨进行观察研究,现将主要结果整理于下。 一、生物学观察 1.性比 1975年到1976年,在茶园内调查7个样本共1,920头成螨,各样本性比(:)在1:2.92到1:3.83之间,平均为1:3.47。 2.交配 若螨在透明表皮内渐变为成螨的形态,同时完成性成熟。雄螨能准确辨别雌性若螨,常聚集其旁,有时以尾刺将其拦腰挑起,四处爬行取食,直到雌体在尾端脱出,立即与之交配。交配呈“一”字形,时间约一分钟(23℃)。雌螨一生只交配一次。交配过的雌螨,即失去对雄螨的引诱力。
Polyphagotarsonemus latus (Banks) Also known as the tea yellow spider, yellow tea mites, is a acarina line mites family mites, tea is an important pest mites. Late shoot damage late leaves appear rough brown spots, leaves dorsal volume, shoots atrophy, annual loss of up to about 20%. We have been observing this mite since 1973, and we now have the main results underneath. 1. Biological observations 1. A total of 1,920 adult mites in seven samples were surveyed in tea plantations from 1975 to 1976. The ratio of samples (:) ranged from 1: 2.92 to 1: 3.83, with an average of 1: 3.47. Mating nymphs in the transparent epidermis into a gradual change into the form of adult mites, while complete sexual maturity. Male mites can accurately identify female nymphs, often gathered next to it, and sometimes to the tail spine to lifted his waist, crawling feeding around until the females at the end prolapse, immediately mating with it. Mating showed “a” shape, the time of about one minute (23 ℃). Female mites mating only once in life. Mating of female mites, that is, lose the attraction of male mites.