【摘要】 通过接种试验看出,桃蚜接种在青菜、菠菜、莴苣等蔬菜上均能取食繁殖,而且相互间可以接种,桃蚜接种在青菜上繁殖生长最快,萝卜蚜和桃蚜接种在番茄上则不能生活,青菜上的萝卜蚜和桃蚜接种在烟草上,其结果萝卜蚜不能生活,而桃蚜经过短期适应取食后,仍可生长、繁殖,为害烟草。 经黄色诱蚜,探求桃蚜和萝卜蚜的迁飞高峰规律看出,两者在一年中的迁飞高峰分别为5月中旬和11月中旬,同时曾采用多种颜色对两种蚜虫趋性的测定,其中以乳鸭黄诱得的蚜虫数最多。 通过不同浓度灌浇试验结果看出,乐果具一定内吸作用,其2000～6000倍液灌浇治蚜,残效期达12～13天,处理后14天蚜虫死亡率才显著降低。更多还原

【Abstract】 It is seen from grafting Aphid test that green peach aphid can feed on green cabbage,spinach and lettuce,and reproduce on them,furthermore,it shows the different viability between on the tested hosts.(1) If green peach aphids were grafted on the green cabbage,they developed and reproduced most rapidly.(2) If turnip aphid and green peach aphids were grafted on the tomato,they could not survive.(3) If turnip aphids and green peach aphids feeding on the green cabbage were grafted on the tobacco,turnip aphids could not survive.(4) but green peach aphids after feeling on them in a short time for adaptating could still develop and reproduce on the tobacco. In order to seek for the rules of the migrating peak of green peach aphid and turnip aphid,we used the yellow-plate induced method,The migrating peaks of these two aphid species in mid-May and mid-November have been found respectively.Various colours had been adopted in the tropism test on both green peach aphid and turnip aphid.In result the duckling-yellow colour seemed to attract more aphids.As a result of watering for chemicals treatment with desired concentrations,it showed that the chemical rogor 1; 2000-6000 x played a part in systemic insecticide,persistant period lasted up to 12-13 days for watering,and 14 days after treatment,aphid mortality decreased apparently.更多还原