玉米丝黑穗病的发生条件与防治措施

玉米丝黑穗病是一种全球性的病害,大多数玉米产区都有不同程度的发生,属绝产性病害,植株一旦得病,几乎颗粒无收。70年代后期,玉米丝黑穗病的大面积发生,逐渐成为限制我国玉米单产和总产提高的制约因素,经我国几代农业科学工作者的努力,对玉米丝黑穗病的症状、病原菌、侵染途径、侵染条件、侵染规律,抗病遗传规律等都进行了大量研究。本文介绍了玉米丝黑穗病的发病症状、病菌来源、侵染途径、侵染条件、生理小种等特性,并提出轮作倒茬、选用抗病品种、抗病弱的品种正确包衣种衣剂、药剂拌土、促进出苗、加强田间管理等相应的防治措施。

Occurrence Conditions and Control Measures on Maize Head Smut

Maize Head Smut is a worldwide disease, it can be happened in any corn fields. The late 70＇s, a large area of maize head smut disease happened, has become a constraint to maize yield and total yield improvement in China. In China, after several generations of agricultural scientific worker effort, symptom, pathogen, infection of Maize Head Smut, resistance genetic regularity were studied. This paper introduces the onset of symptoms, Maize Head Smut pathogen infected sources, ways, infection, physiological conditions kind of characteristics, and put forward the crop rotation, selection of resistant variety, resistant varieties, seed coating agents the right soil mix, promote seedling, strengthening field management and corresponding prevention measures.