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通过大量田间病情调查并收集众多烟农烘烤后出售烤烟的数据,研制了田间烟草花叶病情指数与烤烟亩产值之间相互关系的数学模型。感病品种NC89在中上等生产水平的烟田亩产值(Y)与病情指数(x)的关系可用下述经验方程表示: Y=612.276-7.207X………(1)感病品种NC89在中下等生产水平的烟田亩产值与病情指数的关系式为: Y=393.335-10.422X……(2)另选转基因NC89抗花叶病新品系的烟田若干地块,在中上等生产水平下,其田间病情指数与产值的关系式为: Y=619.448-8.1.40X……(3)将方程(1),(3)进行比较,两者截距相似,b值(斜率)差异不显著,故将两方程合并成为: Y=614.085-7.281X…(4)以上情况说明,在生产水平和烤烟技术相同的条件下,转基因抗病品系的产值损失相比,在组建方程的病指范围(20%以下)内,两者的损失当量相同。
Through a large number of field disease surveys and collecting data on the sale of flue-cured tobacco by many farmers, a mathematic model was developed for the relationship between the disease index and the output value of flue-cured tobacco per mu. The relationship between the yield per hectare (Y) and disease index (x) of susceptible cultivar NC89 at middle and upper production level can be represented by the following empirical equation: Y = 612.276-7.207X ......... (1) The susceptible cultivar NC89 The relationship between the yield per mu and the condition index of tobacco production at the lower production level is: Y = 393.335-10.422X ...... (2) Several plots of tobacco fields with new genetically modified NC89 anti-mosaic strains were selected at middle and upper production levels , The relationship between field index and production value is Y = 619.448-8.1.40X ...... (3) Comparing equations (1) and (3), the intercepts of the two are similar and the difference of b value (slope) is not Therefore, the two equations are combined into: Y = 614.085-7.281X (4) The above shows that compared with the loss of output value of transgenic resistant lines under the same production level and technology of flue-cured tobacco, Range (less than 20%), both of the same loss of equivalent.