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按照“害虫综合治理”的原则要求,我们于1986年对柑桔吹绵蚧采用了引放澳洲瓢虫的办法进行防治试验,取得了显著的效果.现将试验情况和结果简报如下:一、基本情况调查:为了探知浪湾华侨农场柑桔吹绵蚧的发生为害情况及渐趋严重的原因,1985年调查全场柑桔园中的天敌种类时,未发现澳洲瓢虫,除有较少量的草蛉外,也不见吹绵蚧的其他天敌.1986年3、4月间继续调查,吹绵蚧的发生面积已较1985年扩大,该场第3、4、14队和农科站等的2～4年树龄的柑橙果树,有吹绵蚧的果株率已达10～88%,个
In accordance with the principle of “integrated pest management”, we used the method of inducing the ladybugs of Australia to carry out the prevention and control test on the citrus mulberry in 1986, and achieved notable results. The test results and the results are briefly summarized as follows: Survey of Basic Conditions: In order to detect the occurrence and the causes of citrus mealybugulansis in Longwan Overseas Chinese Farm, no ladybugs were found in the 1985 citrus orchards, The amount of grass, but also not see other natural enemies blowing cotton .3,4 months in 1986 to continue the investigation, the occurrence of blowing cotton scale has expanded more than in 1985, the field of 3,4,4 teams and agricultural stations Such as 2 to 4 years old citrus fruit trees, with blowing cottonseed fruit tree rate has reached 10 to 88%, a