辛硫磷和毒死蜱微囊悬浮剂释放机制及其主要影响因素研究  

On Phoxim and Chlorpyrifos Aqueous Capsule Suspension Releasing Mechanism and Main Influencing Factors

作　　者：张光玲[1] 朱建祥[1] 苏卫华[1] 谢明惠[1] 陈浩梁[1] 

机构地区：[1]安徽省农业科学院植物保护与农产品质量安全研究所,安徽合肥230031

出　　处：《安徽农业科学》2014年第8期2350-2351,2355,共3页Journal of Anhui Agricultural Sciences

基　　金：农业部公益业行业(农业)科研专项(201003025);安徽省农业科学院科技创新团队项目(11C1106)

摘　　要：[目的]明确辛硫磷微囊悬浮剂和毒死蜱微囊悬浮剂的主要释放机制和影响因素。[方法]利用液相色谱分析方法,测定2种微囊悬浮剂在2种湿度、温度和通风状态下的土壤释放(消解)动态。[结果]在35℃干燥土壤中,辛硫磷微囊悬浮剂吹风处理的T0.5是2.2 d;而密闭处理的T0.5是859.2 d。在35℃吹风条件下,辛硫磷微囊悬浮剂和毒死蜱微囊悬浮剂在干燥土壤和水饱和土壤中的T0.5分别是2.2和5 800 d;8 d和206.1 d;而当温度为35和25℃(其他条件相同)时,前者的T0.5分别是2.2和18.6 d;后者的T0.5分别是8.0和28.8 d。[结论]辛硫磷微囊悬浮剂和毒死蜱微囊悬浮剂释放机制都是以气化释放为主;湿度和温度是影响两者释放的最主要因素。[ Objective ] To study phoxim and chlorpyrifos aqueous capsule suspension releasing mechanism and main influencing factors. [ Method ] Using liquid spectrum analysis ＂method, soil digestion state of aqueous capsule suspension in two kinds of humidity, temperature and ventilation state. [ Resuhl Under 35 ℃ dry soil, T0.5 is 2.2 d with blowing treatment, T0.5 is 859.2 d with closed treatment. Under 35 ℃ blowing condition, T0.5 of phoxim amd chlorpyrifos aqueous capsule suspension in dry soil and water saturated soil are 2.2 and 5 800 d ; 8 d and 206.1 d ; under 35 ℃ and 25 ℃, T0.5 of the/briner is 2.2 and 18.6 d ; the latter is 8 and 28.8 d. [ Conelusion] Gas release are the main releasing mechanism of phoxim amd chlorpyrifos aqueous capsule suspension; humidity anf temperature are the main influencing factors.

关 键 词：辛硫磷 毒死蜱 微囊悬浮剂 释放机制 影响因素 

分 类 号：S481.8[农业科学—农药学]