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广西植保总站根据各地三化螟冬后虫源基数,结合今春农情及气候特点,参考历史资料分析,预计全区第一代三化螟发生程度为轻、局部中等,与上年同期基本持平,比历年略轻。发生主要区域在桂中、桂西大部,桂北、桂南、桂东北局部,其中百色、崇左等市局部稻区发生较上年重。除百色柳、州个别县发生早外全,区发生期总体比上年迟2~3天,比常年迟3~5天。桂东南桂西南稻区第一代成虫羽化盛期预计在3月中旬至下旬;右江河谷桂、西稻区第一代成虫盛发期在3月下旬至4月中旬;桂中稻区在4月上旬至中旬,桂北、桂西北等其它稻区多在4月上旬至5月上旬。
Guangxi Plant Protection Terminals based on around the stem borer in winter insect base, with the spring of this spring and climate characteristics, with reference to historical data analysis, the region is expected to first generation stem borer light, moderate, with basically the same period last year , Slightly lighter than the calendar year. Occurrence of the main areas in Guangxi, Guangxi, most of Guangxi, Guangxi, Guangxi, Guangxi northeast part, including Baise, Chongzuo City, such as the local rice occurred heavier than the previous year. In addition to Baili Liu, individual counties occur as early as outside the whole area, the overall period of occurrence of 2 to 3 days later than the previous year, 3 to 5 days later than usual. Gui Dong Gui Gui Southwest rice area of the first generation of adult feathering period is expected to mid-March to late; Youjiang River Gui, Xida District, the first generation of adult vigorous period from late March to mid-April; Guizhong rice in 4 From the beginning of the month to the middle of the month, other rice areas in northern Guangxi and western Guangxi are mostly from early April to early May.