西欧各国,谷物种植面积约占可耕地的40～70％,品种以秋播小麦和秋季或春季播种的大麦为主,也兼种少量的燕麦和黑麦(表1,略)。自七十年代初开始使用叶面杀菌剂以防治病害,用药量逐年增加(图1,略)。1979年,约有650万公顷的面积至少进行过一种处理,也许其中有三分之一的面积作过两种处理。药剂主要用于小麦和大麦,少量用于燕麦和 Western European countries, cereal acreage accounts for about 40 to 70% of arable land, the varieties of autumn wheat or autumn or spring seeding of barley-based, but also a small amount of both oats and rye (Table 1, omitted). Since the early seventies began to use foliar fungicides to prevent disease, the dose increased year by year (Figure 1, omitted). In 1979, an area of ​​about 6.5 million hectares was treated at least one way and perhaps one third of the area was treated in two ways. Pharmacy is mainly used for wheat and barley, a small amount for oats and