壁蜂为授粉昆虫,用于果树授粉可明显提高座果率。目前已在日本中北部果区普遍应用,成功地代替了人工授粉。1987年我国从日本引进了角额壁蜂,在释放的同时回收了两种野生蜂,即凹唇壁蜂和紫壁蜂。我省果树主要产区都处在渤海湾地区,早春果树开花期常 Wall bees for pollinating insects, fruit trees for pollination can significantly improve the rate of fruit set. At present, it has been widely used in fruit areas in central and northern Japan and successfully replaced artificial pollination. In 1987, China imported the horn wall mite from Japan. At the same time, it released two kinds of wild bees, the pectoral wall bee and the purple wall bee. The main producing areas of fruit trees in our province are in the Bohai Bay area, early spring flowering trees often