做好病虫预测预报,准确地掌握病虫害的发生期和发生量,是指导防治和提高防治病虫害效果的重要手段之一。过去在甘蔗红尾白螟的虫情预测上,曾提出根据黑光灯的诱蛾量来指导防治。但实践证明灯诱的虫数很少,且要有电源和器材条件,不利于推广。为此,需要寻找另一种灵敏、准确和简便的新方法。目前 It is one of the important means to guide the prevention and control and to improve the effect of preventing pests and diseases by doing a good job of forecasting diseases and pests and accurately grasping the occurrence and occurrence of pests and diseases. In the past in the caterpillar red borer borer prediction of insects, it has been proposed according to the amount of black light trap to guide the prevention and treatment. However, practice has proved that light induced insects rarely, and have the power and equipment conditions, is not conducive to the promotion. To do this, we need to find another sensitive, accurate and easy new method. Currently