防治水稻纹枯病的两种纳米微囊的制备与杀菌活性  

Preparation of Two Nanocapsules and Their Fungicidal Activity against Rice Sheath Blight

作　　者：李柠君 崔建霞 黄秉娜 蒋佳俊 安长成 王琰[1] Li Ningjun;Cui Jianxia;Huang Bingna;Jiang Jiajun;An Changcheng;Wang Yan(Institute of Agricultural Environment and Sustainable Development,Chinese Academy of Agricultural Sciences,Beijing 100081,Chin)

机构地区：[1]中国农业科学院农业环境与可持续发展研究所,北京100081

出　　处：《山东农业科学》2021年第4期108-114,共7页Shandong Agricultural Sciences

基　　金：国家重点研发计划项目(2016YFD0200500);中国农业科学院重大科研任务(CAAS-ZDRW202008)。

摘　　要：为提高水稻纹枯病的防治效率,开发防治水稻纹枯病的纳米药剂,本研究通过W/O/W复乳法结合高压均质技术制备了井冈霉素纳米微囊和噻呋酰胺纳米微囊。结果表明,两种纳米微囊的形貌均呈现分散性良好、粒径均一的球形,粒径大小在300nm左右。两种纳米微囊较市售剂型有更小的叶面接触角,展现出更好的叶面润湿性能。井冈霉素纳米微囊和噻呋酰胺纳米微囊的EC50值分别为389.5295μg/mL和3.6872μg/mL,比井冈霉素和噻呋酰胺市售剂型有更高的杀菌活性。纳米微囊剂型的研发为水稻纹枯病防治的增效减施提供了研究思路与技术手段。In order to improve the control efficacy of rice sheath blight and develope nano pesticides,the validamycin and thifluzamide nanocapsules were prepared by W/O/W-double emulsion method combined with high pressure homogenization.The results showed that the two kinds of nanocapsules were spherical with good dispersion and uniform particle size,and the particle size was about 300 nm.The two kinds of nanocapsules had smaller leaf contact angles than their dosage form in market,and showed better leaf wettability.The EC50 value of the validamycin and thifluzamide nanocapsules were 389.5295μg/mL and 3.6872μg/mL,respectively,which showed higher fungicidal activity than the dosage forms in market such as validamycin water soluble powder and thifluzamide suspensions concentrate.The research and development of nanocapsules could provide research ideas and technologies for control of rice sheath blight under reducing application amount and increasing effect of pesticides.

关 键 词：水稻纹枯病 制备 纳米微囊 杀菌活性 

分 类 号：S482.2[农业科学—农药学]