一种农药控释剂的制备方法本发明的农药控释剂内吸渗透性强,耐雨冲刷,残效期长,兼具预防和治疗效果。用于防治橡胶树条溃疡病,使防病有效期从4天延长到20天以上,年施药从40次减少到6次,防效95％以上。用涂药治疗法取代刮皮治疗法,疗效97％以上。也可用于防治柑桔裙腐病和其它作物疫霉病。市场是国内900万亩和东南亚1亿亩橡胶园,有显著的经济 Preparation method of a pesticide controlled release agent The pesticide controlled release agent of the invention has strong permeation resistance, erosion resistance and long residual period, and has both preventive and curative effects. For the control of rubber tree canker disease, so that the effective period of disease control extended from 4 days to 20 days or more, the application of drugs from 40 to 6 times, control more than 95%. With the application of therapies instead of curettage, efficacy of more than 97%. Can also be used to control citrus skirt rot and other crops Phytophthora. The market is 900 million mu of domestic and 100 million mu of rubber plantation in Southeast Asia, a significant economy