小麦白粉病调查方法的改进研究孙广仲，仇光灿，成晓松（江苏盐城市郊区奉南病虫测报站２２４０２１）近年小麦白粉病为害较重，为开展防治和预测预报，需要进行大量的病情调查工作。目前的病情调查方法，样本量大，严重度分级过细，费时而误差较大，乡村级植保员也难于掌... Investigation on the Improvement of Wheat Powdery Mildew Surveillance Methods Sun Guangzhong, Qiu Guangcan, Cheng Xiaosong (Fengnan Pests and Diseases Monitoring Station on the outskirts of Yancheng City, Jiangsu Province) In recent years, wheat powdery mildew is seriously harmed. In order to carry out prevention and forecast and forecast, a great deal of disease investigation work . The current method of disease investigation, sample size, severity grading too thin, time-consuming and error is large, the country-level plant protection is also difficult to palm ...