国防工程多处在高山作业,由于便利施工人员解大便起见,多半在坑口外不远地方挖有土坑式的厕所,夏天蚊蝇季节里,易招致许多蝇蛆孳生。为了节约大量的杀虫药品起见,可利用空压机下的废油土,进行防止,现将我们利用的方法简述如下,以供参考。1.如果厕所内有水(尿),利用机械油土撒上一层,立即在水面产生一层油膜,布满整个水面,其厚薄可根据砂土的含油量多少而定,原则上只要水面上有一层膜即可。这样在水内浮游的蛆活动能力很快降低,经我们实验结果,四至五个小时后, Due to the convenience of construction workers in relieving the stools, most of the national defense projects work in mountainous areas. Most of them are digging moat-style toilets not far from the pit mouth. In the mosquito season in summer, it is easy to cause many maggots to breed. In order to save a lot of insecticide drugs, air compressor can be used under the waste oil, to prevent, now we use the method outlined below, for reference. 1. If the toilet has water (urine), the use of mechanical oil and soil sprinkle a layer immediately on the surface of the water to produce a layer of oil film, covered the entire surface of the water, the thickness of the soil oil content may be more or less, in principle, as long as the water A layer of film can be. This maglev activity in the water floating plank quickly reduced capacity, after our experimental results, four to five hours later,