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一、发生动态据1949～1989年统计资料分析,自1949～1963年河北省小麦黑穗(粉)病常年发生面积700万亩左右。小麦散黑穗病穗率一般1～3%,高的10%以上;小麦秆黑粉病株率一般5～20%,严重地块达60～80%。经过大力推广石家庄407、石家庄54、丰产5号、农大187等品种,以及推广赛力散,西力生等药剂拌种,到1964年基本控制了小麦黑穗(粉)病的危害。随着汞制剂禁用和药剂拌种面积减少,70年代初小麦黑穗(粉)病再度回升,1973～1979年发生面积在近400万亩。进入80年代,每年都有局部地区流行成灾,1981～1983年,每
First, the dynamic According to statistics from 1949 to 1989, analysis from 1949 to 1963, Hebei Province, black smut (powder) disease perennial occurred about 700 acres. Spikes of wheat scattered smut is generally 1 to 3%, high 10% or more; wheat stalk black powder plant rate is generally 5 to 20%, a serious block up to 60 to 80%. After vigorously promoting Shijiazhuang 407, Shijiazhuang 54, Feng-shu 5, Nongda 187 and other varieties, and the promotion of Saili San, Xili and other pharmaceutical seed dressing, by 1964 the basic control of wheat black ear (powder) disease hazards. With the ban on the use of mercury and the reduction of the seed dressing area, the disease of wheat black spikes rose again in the early 1970s, with an area of nearly 4 million mu in 1973-1979. Into the 80’s, every year there are local endemic disaster, 1981 ~ 1983, each