【摘要】 红菜蝽Eurydema ornata Linnaeus是新疆油菜的严重害虫之一。一年2代,以成虫在十字花科杂草的枯枝落叶及土块下越冬。在北疆越冬成虫于4月下旬首先在野生十字花科杂草上取食,5月中旬开始危害油菜并产卵,卵期6～11d,下旬卵开始孵化。若虫刺吸油菜叶片汁液,一般5龄,若虫期19～27d,菜蝽蝽卵蜂Trissolcus sp是主要天敌,对害虫大发生具有一定抑制作用。药效试验证明应用氧化乐果、速灭杀丁、高效氯氰菊酯、久效磷防治,效果显著。更多还原

【Abstract】 The cabbage red bug Eurydema ornata Linnaeus is one of the most important pest of rape, Brassica campestvis. L. in Xinjiang. It has two generations a year and overwinters as adult under the shelter of bunches of the cabbage family as well as clay. In northern Xinjiang, the bugs emerge from hibernation in late-April. First feed on wild cruciferae, and then migrate to rape field in mid-May, and danaginging rapes and laying eggs. The egg stage lasts for 6 to 11 days, and begins to hatch in late-May. The larvae suck juice from leaves of rape and generally have five instars, lasting for 19 to 27 days. It was found that Trissolcus sp a major natural enemy of Eurgdema ornata, had some suppresive effect on its population. Experimental result showed that insecticide Omethoate. Sumicidin、Cymbush and Monocrotophos were effective against this bug.更多还原