“一六○五”对于人畜毒力很大,使用不当会,发生危险,但这种药剂的杀虫效力特强,若在大量用水稀释后,使用时再加以注意,便不会有困难了。今年将在广大棉区用以治棉蚜及棉红蜘蛛,但乡间用具缺乏,计算亦感麻烦,需要有简便而划一的配合方法,推广到使用地区去,才不致发生偏差。在目前比较好的办法还下多,只好将暂时划一的配合方法和施用时 “1650 ” is very virulent to human and animals, it is dangerous to use improperly. But the insecticidal effect of this kind of medicine is very strong. If you dilute with plenty of water and pay attention to it, you will not have Difficult. This year, cotton aphids and cotton spider mites will be used in the vast cotton area. However, due to the lack of rural appliances, the calculation is troublesome. Therefore, a simple and uniform method of cooperation is needed to promote the use of the area so that no deviation will occur. At present, the better way to pay more, had to temporarily uniform with the method and application