论文部分内容阅读
目前在我国黄河流域中,下游和华北地区有两种小麦吸浆虫,即麦红吸浆虫(见图1)和麦黄吸浆虫(见图2)。据调查此虫有向北扩散漫延的趋势,需各地警惕。小麦吸浆虫除为害小麦、也为害大麦、燕麦及其禾本科杂草。小麦吸浆虫以幼虫于麦子抽穗后,潜伏在颖壳内吸食麦粒里的汁液,造成小麦瘪粒,导致减产(见图3)。小麦吸浆虫的形态特征:成虫体长1.5—2.5毫米,体和翅上被有长毛。念珠状独角14节,每节有一
At present, there are two kinds of wheat midge in the middle and lower reaches of China’s Yellow River basin and in the North China, namely, the wheat imazetha (see Figure 1) and the milk pollinator (see Figure 2). According to the investigation of this worm has spread the trend of spreading north, need to be vigilant around. In addition to harm wheat wheat midge, but also for barley, oats and grass weeds. After inhaling the wheat germ, larvae lurk in the glume and lurk in the juice of the grain, resulting in defoliation of the wheat, resulting in a decrease in yield (see Figure 3). Synechocystis morphological characteristics: adult body length 1.5-2.5 mm, body and wings are long-haired. Rosary Unicorn 14, each one