烟草蚀纹病对烤烟损失估计的研究  

A STUDY ON TOBACCO LOSS ANALYSIS OF TOBACCO ETCH VIRUS

作　　者：冯崇川[1] 李惠琴[1] 赵淑芳 

机构地区：[1]陕西省农业科学院,杨陵712100 [2]陕西省烟草公司

出　　处：《西北农业学报》1993年第4期75-77,共3页Acta Agriculturae Boreali-occidentalis Sinica

摘　　要：烤烟感染烟草蚀纹病毒后,使烟叶化学成分发生变化,特别在3、4级病情下,总氮量和蛋白质含量明显增加,烟碱、还原糖含量显著下降。病害发生造成的产量损失和产值损失均与病情呈正相关,从而组建了产量损失对病情的回归方程和产值损失对病情的回归方程。提出的大田群体估计,其产量损失FY_1=A·K·DA·Σ(_(1i)N_i)/(_(1m)N_m)产值损失共FY_2=P·FY_1·Σ(_(2i)N_i)/(_(2m)N_m),依此公式估计了1989年和1990年陕西省烟草蚀纹病发生造成的损失水平。After the tobacco infected by TEV, its coordination of chemical composition became disorder and particularly under 3～4 scates of disease index, its contents of portein and total nitrogen were significantly increased, but the contents of nicotin and reducing sugar were significantly deceased. The output loss and value loss caused by disease had a great relation to disease index and therefore, regression equations were set up. To deal with population estimates in field, the equation for output loss was . and value loss, Based on the equations, the degree of loss caused by TEV in Shaanxi province was estimated in 1989 and 1990.

关 键 词：损失估计 烤烟叶 烟草蚀纹病 

分 类 号：S435.72[农业科学—农业昆虫与害虫防治]