啤酒花田化学除草的回归最优设计试验  

THE EXPERIMENT OF OPTIMUM REGRESSION DESIGN FOR THE CHEMICAL CONTROL OF WEEDS IN HOPS FIELDS

作　　者：李文强[1] 赵红 

机构地区：[1]宁夏农学院农学系,宁夏永宁750105 [2]宁夏农垦科学研究所,银川750021

出　　处：《宁夏农学院学报》2000年第1期37-40,共4页Journal of Ningxia Agricultural College

摘　　要：试验采用二次饱和D -最优设计 ,研究除草剂 48%地乐胺乳油 (X1)和6 0 %丁草胺乳油 (X2 )的用量与啤酒花田马齿苋的防除效果 (y)间的变化规律 ,建立了二元二次回归模型y =99.2 870 + 2 0 .135 7X1+ 18.5 2 44X2 - 15 .5 882X21- 17.2 2 6 1x22 -2 7.70 97X1X2 。通过对此回归式分析可知 :地乐胺和丁草胺对马齿苋的防除效果很明显 ,地乐胺的防除效果优于丁草胺 ,地乐胺和丁草胺混用有显著的交互作用 ,防除效果最好的药剂组合是 48%地乐胺 2 78.1ml/亩与 6 0 %丁草胺 10 6 .4ml/亩混用。用此模型 。The quadratic saturation D-optimum regressing design was used in order to probe into the interrelation between control effect (y) to purslane (Portulaca oleracea L.)in hops fields and the dosage of Butralin 48% EC(x 1)and Butachlor 60% EC(x 2). A duality quadratic regression model y=99.2870+20.1357x 1+18.5244x 2-15.5882x 2 1-17.2261x 2 2-27.7097x 1x 2was established. A great deal of information was learned by means of analysing the model.Butralin and Butacholr had very highly control effects to purslane. The control effect of Butralin was better than the one of Butachlor. The interaction of two weedicides was very marked. The most effective dosage of controlling purslane was Butralin 48% EC 287.1 ml/667m 2 mixed with Butachlor 60% EC 106.4 ml/666.7m 2. The forecast and control of killing purslane in hops fields can be done by taking advantage of the model.

关 键 词：啤酒花 化学除草 最优设计 地乐胺 丁草胺 

分 类 号：S451.229[农业科学—植物保护] S365