【摘要】 用醋酸纤维素膜包络化学肥料、药物、农药等有效成份，研制开发出一类新型的、由内包络体和控速膜构成的控制释放系统──ＸＤ型膜包络体系列。对制备原理、结构形态、膜包络体控制释放特性进行了分析讨论，展示了该类新型控制释放系统的应用前景。更多还原

【Abstract】 y using cellulose acetate(CA)membrane as the coated unit for the effective components of thechemical fertilizers,medicine and pesticides,a new type of XD coated unit,controlling and release sys-tem consisting of inner coated unit and ratecontrolled membrane,is developed,The preparation princi-ple,instructural pattern and the controlling release characteristics of the membrane coated unit are dis-cussed and analyzed,The prospective application of the new type controlling release system is shown。更多还原