一、病害防控:粗缩病——重在防控传毒害虫由于目前玉米种子播种前均进行了包衣处理,苗期常发病害一般都能得到控制。需要农民密切注意的是近年来常发的玉米粗缩病。该病主要是由灰飞虱、蚜虫等害虫传播造成。粗缩病在玉米生长前期侵染的早期症状容易被忽略,而且田间植株症状不明显。当粗缩病一旦表现出症状,就已经没有有效的治疗 First, disease prevention and control: Slug disease - focus on the prevention and control of poisoning pests As the current corn seed sowing were carried out before the coating treatment, seedling disease can generally be controlled. Close attention to the needs of farmers is the frequent occurrence of corn rough in recent years. The disease is mainly caused by Laodelphax striatellus, aphids and other pests. Early symptoms of tuberculous infection in the early stages of maize growth are easily overlooked and the symptoms of field plants are not obvious. Once the disease shows symptoms, there is no effective treatment