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广西植保总站日前发布预报,预测全区第一代三化螟总体发生程度为轻、局部中等,与上年同期持平。发生主要区域在桂中大部、右江河谷、桂南和桂西的局部,其中来宾、河池、百色、崇左等市局部稻区发生较上年重。发生期比上年偏早2~5天,比常年迟6~10天。桂东南稻区第一代成虫盛发期在3月中旬至4月中旬;右江河谷、桂西稻区在3月下旬至4月下旬初;其它稻区4月上旬至5月上旬。螟蛾主要集中在秧田及早移植田产卵、为害。3月下旬到4月中旬为防治第一代三化螟的关键时段,广西植保总站要求各级植保技术人员要深入田间调查,
Guangxi Plant Protection Terminals recently released forecasts predict the first generation of boreal in the region the overall occurrence of light, moderate, with the same period last year. Occurrence of the main areas in most of Guangxi, Youjiang River Valley, Gui Nan and western Guangxi, where guest, Hechi, Baise, Chongzuo City, such as the local rice occurred heavier than the previous year. Occur earlier than the previous year 2 to 5 days, 6 to 10 days later than usual. The first generation of southeastern rice in the southeast of mid-March to mid-April; the Youjiang River Valley and the West of Guangxi in late March to early April; other rice in early April to early May. Pyralidae mainly concentrated in seedling field transplants eggs, damage. From late March to mid-April to prevent and control the first generation of striped stem borer in the key period, Guangxi Plant Protection Terminals require plant protection technicians at all levels to conduct in-depth field surveys,