Wang Wan-Lei, Liu Yong, Ji Xiang-Long, Wang Guang, Zhou Hai-Bo
College of Plant Protection, Shandong Agricultural University, Tai'an 271018, Shandong, China.
Ying Yong Sheng Tai Xue Bao. 2008 Jun;19(6):1331-6.
Sitobion avenae (Fabricius) is one of the most important pests of winter wheat in China. An investigation was conducted at the experimental farm of Shandong Agricultural University to study the effects of intercropping oilseed rape or garlic with winter wheat on the population dynamics of S. avenae and its main natural enemies. The results showed that in most cases, the population density of S. avenae apterae was significantly lower in wheat-oilseed rape and wheat-garlic intercropping fields than in wheat monoculture field. The population density of ladybeetle and the ratio of ladybeetle to S. avenae were higher in wheat-oilseed rape intercropping field. Before May 2, the population density of aphid parasitoids in wheat-oilseed rape intercropping field was higher than that in wheat-garlic intercropping field and wheat monoculture field; and after May 5, the mummy rate of aphid parasitoids and the ratio of aphid parasitoids to S. avenae in wheat-oilseed rape intercropping field were significantly higher than those in the other two fields. In wheat-garlic intercropping field, S. avenae alatae had a higher population amount, but no significant change was observed in the population amounts of ladybeetle and aphid parasitoids. It was concluded that wheat-oilseed rape or wheat-garlic intercropping could control S. avenae in wheat fields.
麦长管蚜（Fabricius）是中国冬小麦最重要的害虫之一。在山东农业大学实验农场开展了一项调查，以研究冬小麦与油菜或大蒜间作对麦长管蚜及其主要天敌种群动态的影响。结果表明，在大多数情况下，小麦 - 油菜和小麦 - 大蒜间作田麦长管蚜无翅蚜的种群密度显著低于小麦单作田。小麦 - 油菜间作田瓢虫的种群密度以及瓢虫与麦长管蚜的比例更高。5月2日前，小麦 - 油菜间作田蚜虫寄生蜂的种群密度高于小麦 - 大蒜间作田和小麦单作田；5月5日后，小麦 - 油菜间作田蚜虫寄生蜂的僵蚜率以及蚜虫寄生蜂与麦长管蚜的比例显著高于其他两块田。在小麦 - 大蒜间作田，麦长管蚜有翅蚜的种群数量较高，但瓢虫和蚜虫寄生蜂的种群数量未观察到显著变化。得出的结论是，小麦 - 油菜或小麦 - 大蒜间作可控制麦田中的麦长管蚜。
