论文部分内容阅读
研究表明,桃粉蚜一年发生20~25代,以卵在桃树枝条的芽腋或树皮裂缝处越冬。越冬卵3月下旬~4月上旬孵化,5月下旬产生有翅蚜迁飞到夏寄主上繁殖,秋季从夏寄主迁回桃树上,11月产卵在桃树上越冬。桃粉蚜的适温范围为15~28℃。测定5种药剂的药效,以氧化乐果、辟蚜雾、甲甲磷为好,应交替使用,以免产生抗药性
Studies have shown that peach aphid occurs 20 to 25 generations a year, with eggs in peach branches axillary or bark cracks at the winter. Wintering eggs hatch from the end of March to early April, with the emergence of winged aphids in late May to migrate to the summer host to breed. In the autumn, the summer host returns to the peach tree. In November, the eggs lay over the winter in the peach tree. Peach aphid suitable temperature range of 15 ~ 28 ℃. Determination of the efficacy of five agents to omethoate, provision of aphids fog, methylphosphine as well, should be used interchangeably to avoid drug resistance