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在花生田间定量播种玉米、棉花,造成田间不同的小气候,一方面为不同种类天敌的昆虫提供适宜的小生态环境,以保护和繁殖,一方面诱集作物还可招引害虫,便于集中消灭。在花生田间以3.3×3.3米的穴行距,每穴种植玉米4株的模式保护天敌种群(主要是蜘蛛Araneae瓢虫Cocoinellidae、猎蝽Reduviidae、草蛉Chrysopiidae)效果最好。天敌量是化学防治田的10倍,以同样的株行距插种棉花,可以诱集大量棉铃虫产卵,使花生田间着卵量降低80％以上。
Quantitatively sowing corn and cotton in the peanut field can cause different microclimates in the field. On the one hand, it provides suitable small ecological environment for insects of different kinds of natural enemies to protect and breed. On the one hand, the seized crops can also attract pests for centralized elimination. In the peanut field with 3.3 × 3.3 m hole row spacing, planting corn per hole 4 model to protect the natural enemy population (mainly the spider Araneae ladybug Cocoinellidae, assassin bug Reduviidae, Caragana Chrysopiidae) the best. The amount of natural enemies is ten times that of the chemical control field. Interplanting cotton with the same row spacing can induce a large number of cotton bollworm to lay eggs and reduce the number of eggs laid in the peanut field by more than 80%.