论文部分内容阅读
我省每年种植小麦2000～3000万亩。近年来由于多种原因,小麦腥、散黑穗病回升较快,发病率一般在6～20%,个别地方发病率高达30%以上,据初步统计,每年约减产小麦1.5～3亿公斤,影响小麦质量,降低农民收入.一、发生动态据我省1949～1959年统计资料分析,当时每年小麦播种面积在1200万亩左右,而小麦腥、散黑穗病每年发生面积700～1000万亩,其中,腥黑穗发病率5～20%,严重的达30%以
Every year in our province, 2000 ~ 3000 mu of wheat is planted. In recent years, due to a variety of reasons, the occurrence of wheat-fishy and scattered smut has picked up rapidly, with the incidence generally ranging from 6 to 20% and the incidence in some places up to 30%. According to preliminary statistics, wheat is reduced by about 150-300 million kg annually, Affect the quality of wheat and reduce the income of farmers.First, the occurrence According to our province from 1949 to 1959 statistical data analysis, when the annual area of ?? 120000 acres of wheat sown, and wheat, fish, scattered smut every year an area of 700 to 1000 mu Among them, the incidence of sarcoma 5 to 20%, a serious up to 30%