用磷化铝熏蒸法防治柠条种子害虫

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据内蒙古自治区清水河县经验,用磷化铝熏蒸法防治柠条种子害虫效果很好。其检验结果是:在平均温度15.1℃,每米。投药剂量9 g(即3片)的试区中,柠条种子豆象死亡率达99.69%,而每米~3投药剂量12g 的试区,柠条种子豆象死亡率为100%;对发芽率毫无影响。其熏蒸方法是:将种子用麻袋包装,按口字形堆放(以增大袋间空隙,流通空气),而后量出其体积。在每个试验小区中,均匀地分设3—4个施药点,并按每米~3投药9克和12克两种剂量,分别放到去掉盖的发芽(?)中进行熏蒸。每个试验小区的施药点应选择在堆放麻袋的中上部,以使磷化铝吸湿分解出的,比空气比重大的磷化氢毒气自然下 According to the experience of Qingshuihe County, Inner Mongolia Autonomous Region, the use of aluminum phosphide fumigation to control Caragana seed pests works well. The test results are: at an average temperature of 15.1 ℃, per meter. In the test area with the dose of 9 g (ie 3 tablets), the mortality rate of Caragana korshinskii was 99.69%, while that of Caragana korshinskii was 100% in the test area of ​​12 g per meter to 3 doses; Rate no effect. The fumigation method is: the seeds are packed in sacks, stacked in the shape of the mouth (to increase the gap between the bags, the circulation of air), and then measure its volume. In each experimental plot, 3-4 pesticide points were evenly divided into three doses of 9g and 12g per meter, respectively, and then fumigated into the germinating (?) With the cover removed. The application point of each test plot should be selected in the upper part of the pile of sacks in order to make the aluminum phosphide decomposition of moisture, the proportion of air than the phosphine gas natural under
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