ModifiedVariableStructurecontrollerforSingularSystemWENXiangcaiandLIUYongqing(Dept.ofAutomation,SonthChinaUniversityofTechnol...
Modified Variable Structure Controller for Singular System WEN Xiangiang and LI Yu Yongqing (Dept. of Automation, Sonth China
4PU-30[N-phenyl-′N-(2-chloro-4-pyridyl)urea]is a new type of plant growthregulator with cytokinin properties.It hasbeen confirmed to delay rice leaf senescenc