新疆玉米有害生物发生、施药现状及减药对策分析

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通过问卷调查、走访种植大户及田间实地调查等方式,对新疆玉米主产区玉米有害生物发生与用药情况进行系统调查,明确新疆玉米有害生物发生种类、农药使用水平,分析存在问题并提出相应减药对策,从而为新疆玉米有害生物的科学防控及化学农药增效提供指导.结果表明,新疆玉米主要病害6种、害虫36种、杂草38种,主要以“6虫6草”为主.玉米有害生物防治常用农药共26类,其中杀虫剂14类,主要为拟除虫菊酯类、新烟碱类及生物源类;除草剂12类,主要为三氮苯类、磺酰脲类及酰胺.农药使用频次为2~6次/年,制剂施用量为1.938~6.193 kg/hm2,其中,昌吉州农药使用频次和制剂施用量最高,分别为5~6次/年、4.033~6.193 kg/hm2;喀什地区农药使用频次和制剂施用量最低,分别为2~3次/年、1.938~3.356 kg/hm2.
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