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拉美斑潜蝇虫道面积与产量损失率呈正相关 ,在大棚芹菜环境条件下 ,直线回归方程为Y =2 .1 5899+0 .0 81 84X ,经济阈值数学模型为X =1 4 .0 84 5ln 2 3.1 575L68.0 75-L。
There was a positive correlation between the larval area and the rate of yield loss. Under the greenhouse environmental conditions, the linear regression equation was Y = 2 .1 5899 +0. 0 81 84X, and the economic threshold mathematical model was X = 1 4 .0 84 5ln 2 3.1 575L68.0 75-L.