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经对润湿分散剂、崩解剂、黏结剂等助剂的筛选,确定了72%吡蚜.异丙威水分散粒剂的最佳配方为:有效成分72%,助剂18%,填料为绢云母粉。简述了该剂型的特点、配制方法及生产工艺,介绍了产品性能及其测定方法。研究结果表明,该产品悬浮率在90%以上,润湿时间小于30s,崩解时间小于120s,热贮(54℃±2℃,14d)分解率小于5%,各项指标均符合水分散粒剂的要求;室内生物测定及田间药效试验表明,该药剂具有较好的生物活性,明显好于吡蚜酮和噻嗪酮对稻飞虱的防治效果。
Through the screening of additives such as wetting and dispersing agent, disintegrant, binder and so on, the optimum formulation of isoprenone 72% was determined. The optimum formula of isoprifer water dispersible granules is as follows: active ingredient 72%, auxiliary 18%, filler Sericite powder. The characteristics of the dosage form, preparation method and production process are briefly introduced. The performance of the product and its determination method are introduced. The results showed that the product suspension rate was above 90%, the wetting time was less than 30s, the disintegration time was less than 120s, the decomposition rate of heat storage (54 ℃ ± 2 ℃, 14d) was less than 5% Agent requirements; indoor bioassay and field efficacy tests showed that the agent has good biological activity, significantly better than pymetrozine and buprofezin on planthopper control effect.