玉米种子带菌既影响产量、质量,又影响种子的安全贮藏,所以进行种子病害检验,对防治玉米病害是极为重要的。玉米种子病害主要有细菌性萎蔫病、黑粉病、干腐病、小斑病与圆斑病、丝黑穗病等。由于病原物不同,种子病害检验方法也不同。 1.细菌性萎蔫病。由种子带菌传播。带菌的籽粒皱缩,颜色加深,有明显的病害特征,可用肉眼检验。另外还可严密隔离种植检验。在生育期间,最明显的病害症状是植株变矮、丛生、枯萎,沿叶脉扩展为淡黄色至苍白色的条斑。叶片自下向 Maize seed germination not only affects the yield and quality, but also affects the safe storage of seeds. Therefore, it is extremely important to carry out seed disease test to prevent and cure maize diseases. Corn seed diseases are mainly bacterial wilt disease, powdery mildew, dry rot disease, squamous and spot disease, head smut and so on. Due to different pathogens, seed disease test methods are also different. Bacterial wilt disease Spread from the seed carrier. Carried grain shrinkage, darker color, with obvious disease characteristics, available naked eye test. In addition to strict isolation planting inspection. During the reproductive period, the most obvious symptom of the disease is the shortening of plants, tufts, withered, along the veins extended to pale yellow to pale streaks. Leaves from below