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玉田县玉米常年种植面积在60万亩以上。近年来,玉米苗期病虫害危害有加重趋势,常出现玉米叶片缺失、心叶扭曲、叶上出现斑点、萎蔫死苗等现象,如不及时进行正确识别和适时防治,将对玉米安全生产和农民增收造成严重威胁。一、虫害1、玉米蓟马:该虫5月中下旬从禾本科植物陆续迁移到玉米田为害,在玉米上繁殖二代,第一代于6月上中旬为害春玉米,第二
Yutian County perennial planting area of 60 acres or more. In recent years, maize pests and diseases at the risk of aggravating the trend, often the absence of corn leaves, heart leaves distorted leaves appear spots, wilted dead seedlings and other phenomena, if not properly identified and timely prevention and control, will corn safety and farmers Increased income poses a serious threat. First, pests 1, corn thrips: the insects in mid to late May from gramineous plants gradually migrated to the corn field damage, breeding in the second generation of corn, the first generation in June on the damaging spring corn, the second