氯虫苯甲酰胺在甘蔗及土壤间的传导过程、降解规律及安全评价研究

As alternative insecticide for high-toxic pesticides, chlorantraniliprole has been applying extensively in production practice on sugarcane borers control. It had certain permeability and diffusivity, degraded rapidly in sugarcane and slowly in soil while sprayed on the leaf of sugarcane before previous studies. However the effect of its persistent period was comparatively long，there probably exist its transportation pathway in sugarcane and between sugarcane and soil which may cause residue acumulation risk. So far, there were few research on chlorantraniliprole analysis detection and safety assessment about sugarcane reported. Therefore a series of experiments about chlorantraniliprole on sugarcane were designed and their including: 1) Establishing residue analysis methods of chlorantraniliprole in sugarcane, soil and water with LC-MS/MS. 2) Environment behavior of chlorantraniliprole in soil. 3) Residue acumulation risk and degradation law in sugarcane, soil and water. 4) Transportation process of chlorantraniliprole in sugarcane and between sugarcane and soil. The project will help to reveal the environment behavior of chlorantraniliprole in soil, degradation law in sugarcane, soil and water, elucidate the transportation process between sugarcane and soil, scientific assessment the safety of chlorantraniliprole in sugarcane.

氯虫苯甲酰胺作为一种高毒农药的替代药剂，已被广泛地应用于防治甘蔗螟虫的生产实践。前期的研究发现其在甘蔗叶片有一定的渗透性和扩散性,在甘蔗植株上降解较快, 在土壤中降解缓慢，然而其药效持效期相对较长，其在甘蔗及土壤间可能存在传导途径，存在一定的累积残留风险。目前国内外对其在甘蔗上的分析检测和安全评价研究鲜有报道。因此，本项目拟研究：1）利用液相色谱-质谱/质谱法建立氯虫苯甲酰胺在甘蔗、水体及土壤中残留分析方法；2）氯虫苯甲酰胺在土壤中的环境行为；3）氯虫苯甲酰胺在甘蔗植株及土壤、水体中的累积残留情况、降解规律；4）氯虫苯甲酰胺在甘蔗植株及土壤间的传导过程。本研究将有助于揭示其在土壤中环境行为，在甘蔗植株及环境中降解规律，阐明其在甘蔗植株及土壤间的传导过程，为科学评价其在甘蔗上使用的安全性提供试验支持。

氯虫苯甲酰胺作为一种高毒农药的替代药剂，已被广泛地应用于防治甘蔗螟虫的生产实践。本课题建立其甘蔗茎、叶、土壤及水体中的痕量检测分析方法，通过揭示其在南宁、扶绥两地甘蔗植株中的消解动态、最终残留、不同基质中的降解途径，评价其在推荐剂量下使用安全性；通过对其吸附解吸附特性、水解、土壤降解规律研究，揭示其在土壤中环境行为；通过研究其从土壤到甘蔗植株及甘蔗植株内的传导规律和传导过程，发现氯虫苯甲酰胺在甘蔗植株上具有自下而上的传导特性，能够从甘蔗基部通过茎传导到叶片，尤其是顶部叶片。本研究较科学评价其在甘蔗上使用的安全性，为该药在甘蔗上开发持效期相对较长的农药制剂提供试验基础。项目资助发表核心论文4篇，申报国家发明专利2项，参加国际国内学术交流活动4次，培养本科生4名。项目预算直接经费40.0000万元，支出27.9166万元，结余12.0834万元，各项支出基本与预算相符。剩余经费主要为差旅费、文献出版/知识产权事务费等，计划用于本项目后续专利申请、发表论文版面费及调研采样等研究支出。