西北大学研制出多效植物生长剂一种集促长、杀菌、抗寒等功能为一身的多效植物生长剂─—叶绿保，由西北大学副教授王惠贞、副研究员宋迪生夫妇研制成功，并由国家科委列入中国成果推广计划。这种生长剂含有植物生长所需的氮、磷、钾和多种微量元素。自１９９３年以来在山... Northwest University developed a multi-effect plant growth agent A set of growth, sterilization, cold and other functions as a multi-effect plant growth ─ ─ leaves Green Paul, Associate Professor Wang Huizhen from Northwestern University, associate researcher Song Dyson successfully developed and Science and Technology Commission by the China included in the promotion of the results of the project. This growing agent contains nitrogen, phosphorus, potassium and a variety of trace elements required for plant growth. Since 1993 in the mountains ...