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666毒砂防治玉米螟是烟台地区应用最广的方法。具有取材方便、配制使用简单、治螟效果较好等优点,甚受群众欢迎。唯砂粒对药剂吸附性差,毒砂易受雨淋日晒的影响,残效较短,因而易降低防治效果。此外,砂粒大小对毒砂残量、残效的影响如何,目前尚少研究报导,因此1964年我们即从制作技术上进行研究,并探讨不同颗粒大小的毒砂与残量、残效的关系,以便增强对药剂的附着力,提高治螟实效。一、泥浆毒砂的配制方法将666或滴滴涕粉倒入和好的泥浆中搅拌均匀,然后加砂搅拌,使砂粒表面挂有均匀的药泥薄层。拌好的泥砂在通风处摊开涼干、压碎,即
666 Arsenic Control Corn borer is the most widely used method in Yantai. With easy access, preparation and use of simple, good effect of stem borer, etc., very popular with the masses. The only sand on the drug adsorption is poor, arsenic susceptible to rain and sun exposure, short residual effect, and thus easy to reduce the control effect. In addition, the effect of grit size on the residual and residual effects of arsenopyrite is still little reported at present. Therefore, in 1964, we studied the production technique and discussed the relationship between the residual particle size and the residual capacity of arsenopyrite with different grain sizes. Enhance the adhesion of the agent to improve the effectiveness of the treatment of borer. First, the preparation of mud arsenic Will 666 or DDT powder into the good mud and stir, and then add sand mixing, the surface of the sand hanging with a thin layer of drug. Blended sand mixed in the well-ventilated place spread dry, crushed, that is