摘要
Inefficient use of traditional pesticides causes serious environmental pollution. Stimuli-responsive pesticide formulations improve the utilization efficiency of target pests and reduce harm to non-target organisms and the environment. Herein, multi-stimuli-responsive avermectin (AVM) polyurea microcapsules ( [email protected] ) are prepared by interfacial polymerization with modified carboxymethyl cellulose CMC-SS-NH 2 as the wall material and hexadecane as the temperature-responsive core. The microcapsules are 3.90 μm in size and the encapsulation efficiency of AVM is 88.23 %. The photostability of [email protected] is 5-times that of AVM solution. The insecticidal effect of AVM solution and AVM emulsifiable concentrate (EC) decreases to 13.3 % and 16.6 %, respectively, after UV irradiation for 180 min, whereas that of [email protected] still remains at 50.0 %. [email protected] has better foliar affinity and releases under the stimuli of temperature, glutathione , pH, cellulase , and urease . Hence, it has high insecticidal activity and biosafety. This smart controlled-release pesticide formulation provides a promising solution for green agriculture.
危险品化学品经营许可证（带存储）