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根据广西各地三化螟冬后虫源基数调查,结合今春农情及气候特点,参考历史资料综合分析,预计第一代三化螟发生程
According to the investigation of the stem borer population base on the stem borer in winter in Guangxi and the characteristics of the farmland and climate in the spring of this year, with reference to the comprehensive analysis of historical data, it is estimated that the first generation rice stem borer