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Old 08-28-2011, 12:53 PM   #1
xjieu873
 
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Default 大化两万亩玉米遭铁甲虫为害

  4月29日,笔者在大化瑶族自治县岩滩库区走访中发现,在茫茫的玉米地里,随处可见扁椭圆形、表面光滑 硬朗的虫子附在嫩绿的玉米叶片上,六合彩,还有一条条细小的白带“画”在叶片上,魔域私服,这就是虫子啃下叶片最有营养的部分留下的印迹。这些虫子被称为“铁甲虫”。
  
  在岩滩吉发村,香港六合彩,刘老汉望着自家的禾苗被铁甲虫啃下的叶片,直摇头:“今年自家种了6亩玉米,无一例外地受到这种虫子的侵 袭,传奇私服,虽然已经用了农药进行喷洒,但效果并不乐观。”
  
  据悉,该县约有20000亩玉米地受到铁甲虫侵害,岩滩、羌圩、北景、都阳等4个乡镇是重灾区。据调查 ,六合彩,岩滩镇吉发村玉米地3个类型,魔域私服,虫口密度最高达到18870只/亩;羌圩乡羌圩村3个类型玉米地,六合彩,虫口密度最高达到4318只/亩,二个乡镇虫口密度加权平均2798.90只/亩,香港六合彩,达到大发生程度。
  
  据有关病虫害防治专家介绍,4到5月份,正值铁甲虫成虫补充营养、交尾期,行动缓慢,有利于开展人工和 药物防治成虫,香港六合彩。目前,该县农业局正组织农技人员深入灾区指导防治救灾工作,魔域私服。 (韦学 黄 航)
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