论文部分内容阅读
柑桔卷叶蛾是杨村柑桔场主要害虫之一,终年为害,尤以4月为害幼果及9月为害将近成熟果而造成大量落果,损失很大。为防治卷叶蛾,本场每年虽用敌百虫20吨以上,也只能基本上控制为害。对生长比较茂密或树干较高的栟柑园,由于喷药很难均匀,往往仍会受害引起大量落果,是造成柑桔减产原因之一。本场柑桔园一般每年使用农药10次左右,主要防治红蜘蛛、锈蜘蛛、卷叶蛾、柑桔尺蠖、潜叶蛾等,由于每次喷
Citrus leaf-web moth is one of the main pests in citrus field of Yangcun. It is endangered all the year round, especially in April and juveniles in September. For the prevention of leaf roller moth, although the annual use of trichlorfon 20 tons or more, it can only basically control the damage. On the relatively dense growth or tall tree trunk citrus garden, spray difficult due to uniform, often still cause a lot of fruit drop, is one of the reasons for the reduction of citrus. The citrus garden in general use of pesticides about 10 times a year, the main control spider mite, spider moths, leaf roller moth, orange leaf miner, leaf moth and so on, as each spray