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水稻霜霉病(Scleophthora macrospora)在我县是一种不常见而危害性较重的水稻病害,1989年早季我县万安乡有3处稻田发生水稻霜霉病,面积320亩。一般病株率在20—30%,减产30%左右,严重田块病株率50%以上,造成损失超过5成,如富湖村在6月中旬因此病翻犁了稻苗20余亩。晚季在原翻犁的病田仍发病较重,病株率20%左右,其他原发病田仍普遍发病,病株率6—10%,另在莲圹乡的九秋村,万安乡的连垱村和仙阳镇的渔梁村
In our county, Scleophthora macrospora is an uncommon and damaging rice disease. In early 1989, rice downy mildew occurred in 3 paddy fields in Wan’an Township, an area of 320 mu. General plant strain rate of 20-30%, about 30% reduction in the yield of more than 50% of the serious field plots, resulting in the loss of more than 5 percent, such as Lake Fuchu in mid-June so disease plowed more than 20 acres of rice seedlings. Late in the original plow disease still serious incidence of disease, the diseased plant rate of about 20%, other primary disease is still common disease, diseased plants rate of 6-10%, and the other in Lianqu Township, nine autumn village, Wan An Township Even the village and the town of Xiangyang fishing Liangcun