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黄杨粕片盾蚧在北方严重为害小叶黄杨，１ａ发生２代，多以成虫、部分以２龄若虫越冬。第１代１龄若虫高峰日为５月１２～１６日，第２代１龄若虫盛期为７月下旬，以第１代发生较为整齐。该蚧虫在小叶黄杨上主要分布于１ａ生枝叶，并以１龄若虫逐年向新生枝叶主动扩散，在较大范围内扩展较快，在３～４ａ内可造成严重为害。对其防治的关键时期是１龄若虫活动期和雄成虫期。喷洒４０％氧化乐果１０００倍液、洗衣粉５００倍液防治１龄若虫及雄成虫，根施１０％铁灭克、４０％氧化乐果５０倍液防治１龄若虫，虫口减退率可达９０％以上。
Bursaphelenchus crauensweb seriously damaged in the north of Boxwood, 1a occurred two generations, mostly adult, part of the 2nd instar nymphs overwintering. The first-generation first-instar nymphs peaked from May 12 to May 16, and the second-generation first-instar nymphs peaked in late July, with the first generation occurring more regularly. The scale insects are mainly distributed on the roots and leaves of Boxiae laevigata, and the first-instar nymphs actively diffuse to new branches and branches annually, expanding rapidly in a wide range, and can cause serious damage within 3 ~ 4a. The key period of its prevention and treatment is the first instar nymphs and male adult stage. Spraying 40% omethoate 1000 times, washing powder 500 times to control the first instar nymphs and male adults, the root of 10% iron off grams, 40% omethoate 50 times to control the first instar nymphs, the reduction rate of up to 90 %the above.