玉米纹枯病是我县玉米上新上升的一种病害,近几年来对玉米生产威胁很大,有关测报和防治的技术资料较少。为了给综合防治该病提供理论依据,从1986年开始笔者对该病的田间发生规律进行了系统观察,并对产量损失进行了测定,对防治技术作了研究,现报道于后。一、系统观察选择玉米纹枯病发生严重的田块,播种中单二号品种,整个生育期不进行任何药剂防治,三叶期开始每3天普查一次,始病后确定5点,每点用红油漆标记20株,5天调查一 Corn Sheath Blight is a newly rising disease on our county corn. In recent years, there is a great threat to the production of corn. There is less technical information on measuring and controlling corn. In order to provide a theoretical basis for the comprehensive prevention and treatment of the disease, from 1986 onwards, the author systematically observed the law of occurrence of the disease, and measured the yield loss. The prevention and treatment technology was studied and is reported later. First, the systematic observation Select Sheep sheath blight serious plots, sowing a single No. two species, the entire growth period without any agent control, three-leaf period began census every 3 days, 5 points after onset, each point Marked with red paint 20, 5 days to investigate one