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预计今年三代粘虫总体中等发生
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预计今年三代粘虫总体中等发生
摘要:预计2018年三代粘虫总体中等发生,其中幼虫为害盛期在7月底至8月中旬。根据全国农业技术推广服务中心预测数据显示,预计2018年三代粘虫总体中等发生,发生面积为2000万亩(1.33百万公顷)。其中东北和华北北部蛾量高、杂草多、气候适宜地区将出现集中高密度为害区域或地块;幼虫为害盛期在7月底至8月中旬。该预测主要是依据今年7月中旬以来,东北、华北大部地区出现二代粘虫成虫蛾峰,部分地区诱蛾量高,结合近期和未来一段时间气象因素。值得注意的是,截止至8月1日,国内登记用于农作物粘虫防治的药剂仅有...
Insecticides China News 201808(Chinese version)
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