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一、播种前防治1.根据病虫害发生种类,选用优良的抗、耐病虫高产品种,避免大面积种植同一品种。如豫禾988高抗茎腐病、矮花叶病;郑单958较抗青枯病、锈病等。2.深耕灭茬,可有效地消灭地下害虫和减少玉米纹枯病、黑粉病的侵染来源。3.清除田间、地边与沟边杂草,切断病虫害发生的桥梁寄主植物,能有效地预防玉米粗缩病、矮花叶病等的发生。4.在杂草常发生严重的地块,春、夏直播玉米田要做到整平整细,以便于喷施除草剂以及除草剂发挥更大的效果。二、播种期防治1.因地制宜使用包衣种子,或使用玉米专用种衣剂进行种子包衣,既防治多种地下害虫,如蛴螬、蝼蛄、金针虫、小地老虎等,又防治苗期蚜虫、蓟马、灰飞虱、红缘灯蛾等害虫,同时还可减轻玉米粗缩病等病
First, the prevention and control before planting 1. According to the types of pests and diseases, the selection of good resistance, pest-resistant varieties of high-yield, to avoid planting a large area of the same species. Such as Henan Wo 988 high resistance to stalk rot, dwarf mosaic disease; Zheng Dan 958 more resistant to bacterial wilt, rust and so on. Deep plowing stubble, which can effectively eliminate underground pests and reduce corn sheath blight, smut source of infection. 3. Clear field, land and ditch weeds, cut off the bridge host plant diseases and insect pests, can effectively prevent the occurrence of maize dwarf disease, dwarf mosaic disease. 4. Weeds often occur in serious plots, spring and summer live corn field to be leveling the whole fine, in order to facilitate the spraying of herbicides and herbicides to play a greater effect. Second, the sowing period control 1. The use of coated seed according to local conditions, or the use of special seed coating agent for seed coating, both control a variety of underground pests, such as catfish, catfish, pinworm, small tiger, etc., , Thrips, Laodelphax striatellus, red edge moth and other pests, but also reduce maize disease and other diseases