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肉桂是主要药用植物，全身是宝，广东西江桂皮和桂油是国际和国内市场驰名的香料和医药品。近年来，由于国际市场大量需要，肉桂产品价格不断上升，种植肉桂经济效益日益提高。种植肉桂已成为贫困山区农民脱贫致富，发展农村经济的主要途径。仅肇庆市种植肉桂已达７．３万公顷以上，其中郁南县占１．４７万公顷。由于肉桂种植面积迅速扩大，种苗调运频繁。近年来发现受多种新害虫严重为害。据１９８９年调查，西江林业局属下六个县１１个林场，被双瓣卷蛾严重为害的林地受害株率达９０％；嫩梢枯死率达６３％。１９９０年在郁南县通门镇及大全乡调查，受肉桂木蛾死株率达９０％，一般亦达３０～４０％。１９９２年在郁南、德庆两县又发现了肉桂泡盾盲蝽，该虫在取食肉桂汁液时分泌出体液而使肉桂正常生长受到影响，产生畸形，同时，此虫能带有球二孢和拟茎点霉两种病菌，造成在取食伤口处发病，最后使桂树死亡。据郁南县１９９２年调查估计，肉桂大面积死亡以致失收的面积达２，０００公顷。经济损失达２，２５０万元。邻近的广西岑溪县报道，因该虫为害而造成死亡的肉桂有１００公顷之多。从１９８９年开始，笔者在郁南县、德庆县、怀集县、云浮市，西江林场、富石林场等肉桂地的５６６７公顷面积进行?
Cinnamon is the main medicinal plants, the body is treasure, cinnamon and cinnamon in Guangdong Xijiang international and domestic markets are well-known spices and pharmaceuticals. In recent years, due to the huge demand in the international market, the price of cinnamon products has been on the rise, and the economic benefits of planting cinnamon are increasing day by day. Planting cinnamon has become the main way for peasants living in poverty-stricken mountain areas to get out of poverty and develop their rural economy. Only Zhaoqing city cinnamon cultivation has reached 73,000 hectares, of which Yunan County accounts for 14,700 hectares. Due to the rapid expansion of planting area of cinnamon, seeds are frequently transported. In recent years, it has been found to be severely damaged by many new pests. According to a survey conducted in 1989, 11 farms in six counties under the Xijiang Forest Bureau suffered 90% of the plant damage suffered from forest land severely damaged by the double-bud curling moth. The dead rate of shoots reached 63%. In 1990, Tongnan Town, Yunan County and Daquan Township were surveyed. The dead rate of Cinnamomum cassiae was 90%, and it was generally 30-40%. In 1992, Yu Nan and Deqing counties also discovered the ciliates of Cinnamon Bubble Shield Bug, which secrete body fluids while feeding on cinnamon juice to affect the normal growth of cinnamon and produce deformities. At the same time, the insect can carry ball two Spores and Phomopsis sp. Two kinds of bacteria, causing the incidence of feeding in the wound, and finally to cinnamon death. According to a survey conducted by Yuenan County in 1992, a large area of cinnamon was destroyed and the area for loss was 2,000 hectares. Economic loss of 22,500,000 yuan. Cenxi County, near Guangxi, reported that the cinnamon that died as a result of the pest infestation was as much as 100 hectares. Since 1989, the author has conducted 5667 hectares of cinnamon fields such as Yunan County, Deqing County, Huaiji County, Yunfu City, Xijiang Forest Farm and Fu Shilin Forest Farm.