Eriosoma lanigerum is an important quarantine object harming Malus fruit trees. In this research, techniques for controlling the pests in Shandong province, especially in Jiaodong peninsula were studied in the period of 6 months every year, from May to October, when Eriosoma lanigerum Hausann flourish. The study was carried out in Haiyang, Qixia, Laiyang, Mouping and Zhaoyuan, which are five counties in Shandong province. Three to five selected orchards in each county were investigated by means of site-inve...