近年来,蚕豆赤斑病(Botritis fabae)、褐斑病(Ascochyta fabae)已上升为蚕豆主要病害,作者于1986—1988年对其为害及经济阈值进行了探讨,简报如下。一、研究方法试验区均为纯茬蚕豆,1986、1988年播种启东2号品种,各6个处理。1987年播种大粒型品种,8个处理。小区面积0.042—0.081亩,重复3次(1988年重复4次)。当 In recent years, Botulinum fabae and Ascochyta fabae have risen to the major diseases of Vicia faba. The author studied the damage and economic threshold from 1986 to 1988, and the brief introduction is as follows. First, the research methods Experimental area are pure crop beans, 1986, 1988 planting Qidong 2 varieties, each 6 treatment. 1987 sown large grain varieties, 8 treatment. Area of ​​0.042-0.081 acres of plots, repeated 3 times (1988 repeated 4 times). when