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《Journal of Anhui Agricultural Sciences》 2012-12
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The Model of Grassland Rodents Control

SUN Jun-na(Department of Mathematics and Information Science,Weinan Normal University,Weinan,Shaanxi 714000)  
Three methods were adopted to analyze economic benefit and deratization effect.Model 1: The logistics model was adopted to describe the variation function of mouse quantity with time in the condition of without use any deratization measures;Model 2: Adding a constraint function which varied with time,deratization quantity,effective deratization time and cost were obtained through MATLAB program;Model 3: The variation trend between enemy and mouse was observed through introducing Volterra predator-prey model,then short-term,long-term effects and capital investment were obtained;Model 4: On the basis of logistics model,introducing pasture retardation factor,the effective time and cost of deratization quantity were obtained through MATLAB.
【Fund】: 陕西省科技厅项目(2011JM1010);; 渭南师范学院重点科研项目(11YKF011)
【CateGory Index】: S812.6
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