论文部分内容阅读
研究结果表明 :1南美斑潜蝇为害大棚芹菜和芸豆 ,其虫道面积与产量呈负相关 ,与产量损失率呈正相关 ;2曲线回归方程为 :Y(大棚芹菜产量 ) =4 . 2 2 3/ (1+ 0 . 2 6 6 9e0 .0 2 81X) ,Y(大棚芸豆产量 ) =5 0 0 95 0 . 70 2 / (1+392 6 2 .76 5 41e0 .0 10 3 X) ,Y(大棚芹菜产量损失率 ) =6 8.0 75 / (1+ 2 3.15 17e-0 .0 71X ) ,Y(大棚芸豆产量损失率 ) =71.76 5 / (1+ 4 .2 6 2 4 5e-0 .0 3 0 5X) ;3经济阈值模型为 :X(大棚芹菜 ) =14 .0 84 5 ln[2 3.15 75 L/ (6 8.0 75 - L) ],X(大棚芸豆 ) =2 7.3973ln[4 .2 6 2 4 5L/ (71.76 5 - L) ]。
The results showed that: 1 South American Liriomyza sativae were harmed in greenhouse celery and kidney beans, and its area of insects was negatively correlated with the yield and positively correlated with the yield loss rate. The regression equation of 2 curves was Y (greenhouse celery yield) = 4.223 / (1+ 0 2 6 6 9e0 .0 2 81X), Y (yield of greenhouses) = 5 0 0 95 0. 70 2 / (1 + 392 6 2 .76 5 41e0 .0 10 3 X), Y (Yield loss rate of greenhouse celery) = 6 8.075 / (1+ 2 3.15 17e-0 .0 71X), Y (yield of greenhouses yield loss) = 71.76 5 / (1 +4.26 2 45e-0. 0 3 0 5X); 3 The economic threshold models were: X (greenhouse celery) = 14.084 5 ln [2.15.15 75 L / (8.05-75 L)], X .2 6 2 4 5L / (71.76 5 - L)].