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据调查及各县汇报,台州专区1965年早稻黑条矮缩病发病面积约2万多亩,其中以天台县发病面积最广,病情较重。为了了解病情,掌握规律,加强防治,我们对该县早稻黑条矮缩病的发生情况,进行了初步调查,现将调查结果简述如下。一、早稻受害损失情况天台全县共有7个区,经调查,1965年的早稻除2个山区区未发现本病之外,其余5个区皆有黑条矮缩病发生。发病面积约8000多亩,占早稻面积5％左右。其中以城郊区的丽泽公社和靠近杭临公路的铺前农场发病顶重,捐失最大。丽泽公社发病面积占早稻面积30％左右。铺前农场270亩早稻,发病的有200亩,占74％;其中捐失率在30～40％的有50亩,损失20％的
According to the survey and county reports, the incidence of black-streaked dwarf disease in Taizhou area in 1965 was about 20,000 mu, of which the area with the largest incidence and the heavier the disease was in Tiantai County. In order to understand the disease, master the law and strengthen prevention and control, we conducted a preliminary investigation on the occurrence of black-streaked dwarf diseases in the early rice in this county. The survey results are summarized as follows. First, the loss of early rice damage Tiantai county a total of seven districts, the survey, 1965 in addition to the two mountainous areas of early rice did not find the disease, the remaining five districts all have black-streaked dwarf disease. The disease area of about 8000 mu, accounting for about 5% of the area of early rice. Among them, the outskirts of the Lize Commune and the Hanging Road near the shop before the peak incidence of illness, the largest loss. The incidence of Lize commune accounted for about 30% of the area of early rice. Shop front 270 acres of early rice, the incidence of 200 acres, accounting for 74%; of which the loss rate of 30 to 40% of 50 acres, the loss of 20%