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近几年来,稻纵卷叶螟在我区发生为害逐渐加重,已上升为水稻上的重要害虫之一。田间稻纵卷叶螟的卵常被一些赤眼蜂寄生,自然寄生只能消灭一部分害虫。通过人工室内繁殖大量蜂群,于害虫盛发前释放,补充田间蜂量,就能抑制害虫的发生为害。今年我们在学习广东省“以虫治虫”生物防治经验的基础上,进行了室内人工繁蜂,和对第二代、第四代稻纵卷叶螟田间放蜂试验,初步取得一些效果。
In recent years, the occurrence of rice leaf roller in my area gradually increased, has risen to one of the important pests on rice. The eggs of the rice leafroller in the field are often parasitized by some Trichogramma, and natural parasitism can only destroy part of the pests. Through artificial indoor breeding a large number of bee colony, released before the pest burst, replenishment of field bee, can inhibit the occurrence of pests. This year we conducted a study on the biological control experience of “pest control pests” in Guangdong Province. We conducted indoor breeder trials and carried out bee trials on the second and fourth generations of rice larvae. Preliminary results were obtained.