多功能悬浮型药用植物种衣剂的研制及其生物活性

摘要

目的:研制多功能悬浮型药用植物种衣剂,提高中药材种子种苗质量.方法:在前期研究的基础上分别对润湿分散剂、增稠剂和成膜剂等助剂进行筛选及优化,在测定所研制种衣剂性能的同时测定了其对黄芪、甘草和桔梗种子发芽和田间出苗的影响以及对病虫害的防治效果.结果:以一定质量分数的杀虫剂、杀菌剂、营养成分和生长调节剂为有效成分,3%的NNO及1%的CMN为润湿分散剂,1%的海藻酸钠及1%的阿拉伯胶为增稠剂剂, 3%的PVA-1799及1%的CMC为成膜剂通过湿法研磨制得种衣剂,种衣剂在一定包衣比下对药材种子的发芽率、田间出苗率和幼苗的生长有明显促进作用,并显著增强了植株对田间病虫害的抗性.结论:研制的悬浮种衣剂性状合格,具有良好的市场应用前景.%Objective:To improve the quality of seed seedlings of Chinese medicinal materials,the multifunctional floatable concentrates for seed coating(FSC)were prepared.Methods:Based on the previous study,a series of wetting and dispersing agent,thickening agent,film-forming agent and other agents were optimized to construct the formulation and the physicochemical characteristics of FSC were measured.Then the application in emergence rate and the effect of FSC on diseases and pests of astragalus,liquorice and platycodon were studied in field.Results:The wet milling method was ultimately chosen as the optimal method to prepare the FSC which contains the following fomula:certain insecticide,bactericide,mineral nutri-tion and growth regulator as active ingredient;NNO 3% and CMN 1% as wetting and dispersing agent;sodium alginate tech grade 1% and Arabic gum 1% as thickening agent and PVA-1799 3% and CMC 1% as film-forming agent.The further field experiment revealed that,the germination and emergence rate were increased,seedling growth were improved and in the mean-time the defenses against disease,bugs were enhanced under treatment of FSC.Conclusion:The FSC's index of quality anal-ysis was qualified,and it will have the good market application prospect.