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一、发病的普遍性和严重性今年五常县水稻普遍地发生了稻瘟病。发病的时间较早,面积较广,全县由南到北,由东到西凡是栽培了水稻的地区都有所发生;不过一般说来南部较重,北部较轻。据该县农业科八月二十七日的统计,圣县15,635公顷的稻田,稻瘟病成灾者达4494公顷,其中受灾程度 1—2成者 1004公顷,3—5成者3355公顷,6—7成者68公顷,8—10成者67公顷。作者在该县南部双兴人民公社以及东南部山区向阳人民公社中爱路、永兴、中原、
First, the prevalence and severity of the disease Wuchang County rice this year, the general occurrence of rice blast. The incidence of earlier, a wider area, the county from south to north, from east to west Where cultivated rice have occurred; but in general the southern heavier, the northern lighter. According to the statistics of the Agricultural Department of the county on August 27, there were 4494 hectares of rice blast plague victims in 15,635 hectares of paddy fields in Sheng County, of which 1,004 hectares were affected by the damage, 3,055 hectares were 3,055 hectares, and 6 -7 into 68 hectares, 8-10 into 67 hectares. The author in the county south of Shuangxing people’s commune and the southeastern mountain sun people’s commune Zhong Ailu, Yongxing, Zhongyuan,