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1990~1993年间,在桂西南的左江、桃城、浪湾和武鸣4个华侨农场的荔枝龙眼果园中,进行了荔蝽的发生情况调查和综合防治研究。结果表明:(1)在试区内荔蝽每年发生一代,主要以成虫在高大的龙眼树上越冬。越冬成虫在早春气温达15℃以上时开始活动、交尾产卵,3月下旬至4月下旬为产卵盛期,卵期9~23d不等,3~5月为种群数量最大的时期,因此荔枝龙眼的春梢、花和幼果受害严重。(2)荔蝽的主要天敌是蝽卵跳小蜂和平腹小蜂,在5月中下旬调查,保护区内这两种寄生蜂的总寄生率可高达98.29%,明显的控制了荔蝽的继续繁殖为害。(3)荔蝽的综合防治方案,应根据果园的生态结构,因时因地制宜,协调运用农业防治、人工防治、生物防治和化学防治等方法,着重抓好荔蝽越冬期和荔枝龙眼春梢、花果时期的防治工作。
During 1990-1993, the investigation on litchi and its integrated control were carried out in Litchi Longan orchard in four overseas Chinese farms of Zuojiang, Taocheng, Langwan and Wuming in the southwest of Guangxi. The results showed as follows: (1) There occurred a generation of Legionella in the test area each year, mainly with adult overwintering in the tall longan trees. The overwintering adults started their activities when the temperature reached 15 ℃ in early spring, and laid their eggs at the end of mating. In late March to late April, they were the spawning period. The oviposition period ranged from 9 to 23 days and from March to May was the period when the population was the largest. Litchi longan spring shoots, flowers and young fruit serious. (2) The main natural enemies of stinkbugs were Labyrinths and Hoppel beetles. In the middle and late May, the total parasitism rate of these two kinds of parasitoid was as high as 98.29% Bugs continue to breed damage. (3) According to the ecological structure of orchards, the comprehensive control plan of 蝽 因 should be coordinated with the methods of agricultural prevention and control, artificial prevention and control, biological control and chemical prevention and control in accordance with the ecological structure of the orchards, focusing on the spring shoots, Preventing and controlling work in flower and fruit period.