论文部分内容阅读
近年来在石河子、奎屯、昌吉、吐鲁番等地,普遍发生了哈密瓜病毒病,一般发病率在50%左右,重者可达90~100%,严重影响哈密瓜的产量和质量。据我们试验证明,这种病毒病的发生发展与蚜虫密切相关,蚜虫向瓜地迁飞越早,发病越早。迁飞量越大,发病越重。近几年通过瓜田黄器诱蚜及在无虫网室下进行蚜虫试验,看出向瓜田迁飞的蚜虫主要是麦二叉蚜的桃蚜。它们以非持久性方式在田间迅速传播,导致哈密瓜病毒病的迅速蔓延。石河子一带1983年蚜量较多,据石河子地区气象资料,1985年5~6月的气温比往年同期相比偏低,5月平均气温17.4℃,空气相对湿度57.6%,正是蚜虫生活繁殖的最适温度(15~18℃)。
In recent years, Shihezi, Kuitun, Changji, Turpan and other places, the prevalence of Hami melon virus disease, the general incidence of about 50%, severe cases up to 90 to 100%, seriously affecting the yield and quality of melon. According to our experiments, the occurrence and development of this virus disease are closely related to aphids, and the aphids migrate to melons earlier and earlier. The larger the amount of flight, the heavier the incidence. In recent years by a melon Tian Huang lure aphid and non-insect nets aphid test, see the melon migrate aphids mainly wheat aphid Myzus persicae. They spread rapidly in the field in a non-persistent manner, resulting in the rapid spread of the melon virus disease. Shihezi area in 1983 aphid more, according to Shihezi meteorological data, the temperature of May to June 1985 compared to the same period in previous years low, the average temperature in May 17.4 ℃, air relative humidity 57.6%, it is aphid life and reproduction The optimum temperature (15 ~ 18 ℃).