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2012年10月下旬至11月陆续有农民来我站咨询小麦死苗问题,起初认为是小麦根腐病。但在田间调查时发现不是小麦根腐病,疑似玉米除草剂药害。2013年我们对发生此类死苗现象的农户进行了玉米除草剂使用情况调查,90%以上的农户使用烟嘧磺隆与莠去津的复配剂,用药时都超过正常剂量的1倍以上,有两户为玉米小喇叭口期以后第二次施药。因此确定其为玉米除草剂使用过量引起的小麦大面积死苗。现将此情况总结一下,以引起人们的警惕,并希望各位同行能一起研究解决。一、田间症状及药害情况小麦能正常出苗,出苗后10一15天麦苗开始发黄并停止生长,逐渐死亡;次生根数量极少或无次生根,无分蘖;田间分布呈条带状,与农户
From late October to November 2012, some peasants came to our station to consult the question of dead wheat seedlings, which was initially thought to be the root rot of wheat. However, in the field investigation found that wheat root rot is not suspected corn herbicide injury. In 2013, we investigated the use of corn herbicide in farmers who died of such dead seedlings. More than 90% of farmers used the compound of Nicosulfuron and Atrazine more than twice as much as the normal dose , There are two for the second time after the corn trumpet mouth spraying. Therefore, it is determined that it is a large area of wheat seedlings caused by excessive use of corn herbicide. Now summarize this situation to arouse people’s vigilance, and hope that all colleagues can work together to study and solve. First, the field symptoms and injury situation Wheat germinate normally, 10-15 days after emergence, the seedlings began to yellow and stopped growing, gradually died; the number of secondary roots or no secondary roots, no tillering; field distribution was banded, And farmer