当毒饵治蝗方法推广的初期,在面积辽阔、水源较远的蝗区,曾采用挖掘土井,用大簸箩就地拌饵的方法,运输亦全凭人力。毒饵治蝗方法在当时虽已较任何可能采用的方法为节省劳力,但平均每一日工(以8小时计)亦仅能防治20亩地的蝗虫。其后若干地区改用了在固定地点集中拌饵的方法,但工作效率似提高不多,因此在估计毒饵治蝗的效率时,一般 When the poison bait locust control method to promote the early, in a vast area, far from the water locust area, has used excavation wells, with a large bumpy local bait approach, transport also depends entirely on manpower. At the time, although the method of locust control by poison bait was more labor-saving than any possible method, it could only control locusts of 20 mu per day (on an 8-hour basis). In subsequent regions, the method of concentrating bait in fixed locations was switched to, but the efficiency of work was not much improved. Therefore, in estimating the efficiency of bait locust control,