本刊讯东北稻区7月中下旬以来,受连续阴雨寡照天气影响,稻瘟病发生重于去年。截至8月20日,黑龙江、辽宁和吉林三省叶瘟累计发生1031万亩,是去年同期的2.1倍;穗瘟发生约98.6万亩(其中黑龙江垦区发生78.6万亩),是去年同期的4倍以上。经组织有效防控,叶瘟未造成明显危害,病穗率大部分控制在1%以内。 The newsletter Northwest rice in late July, affected by the continuous rainy weather, rice blast occurred heavier than last year. As of August 20, 1031 million mu of leaf blast occurred in Heilongjiang, Liaoning and Jilin provinces, 2.1 times of that of the same period of previous year; 986,000 mu of head blast occurred (including 786,000 mu in Heilongjiang reclamation area), four times of the same period of previous year the above. Effective prevention and control by the organization, leaf plague did not cause significant harm, disease panicle rate most of the control in less than 1%.