近年来,一些地方麻雀孳生成灾,大量捕食人工释放的螳螂、瓢虫等益虫,严重影响“以虫治虫”的效果;而且危害谷类作物制种,使有些地方的良种繁育工作受到影响。例如我所院内抗锈育种田的小麦,过去每年乳熟后均发生轻重不同的雀害。有时只有几个穗的宝贵育种材料,被雀吃尽。 In recent years, some local sparrows have been plagued with catastrophes and predators have consumed predators such as mantis, ladybugs and other beneficial insects, which have a serious impact on the effect of pest control. In addition, they have also threatened the seed production of cereals and affected the breeding of fine seeds in some places. For example, the rust-resistant breeding farm in our hospital’s wheat has experienced various levels of damage after milking each year. Sometimes only a few spike precious breeding material, was exhausted by the bird.