【摘要】 2000～2003年对玉米弯孢菌叶斑病的田间发生消长规律及其主要影响因子进行了研究,明确了田间病残体是玉米弯孢菌叶斑病初侵染来源;播种期、施氮肥量、前茬作物和气象因子都会对该病害的发生程度产生影响;提出了以清除病残体为主,化学防治为辅的综合防治措施。更多还原

【Abstract】 The occurrence regularity of curvularia leaf spot and influence factors were investigated in 2000~2003. Results indicated that the diseased plant in field was the initial infestation resource of curvularia leaf spot. Sowing stage, nitrogen content in the soil, rotation crops and weather factor had influences on the occurrence of this disease. The integrated control strategies were put forward through cleaning the field, removing the diseased plant and chemical control.更多还原