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一、试验目的冬小麦是冀中南主要的粮食作物,常年种植面积200多万公顷。近几年,由于连年使用磺酰脲类内吸传导型除草剂(苯磺隆),使阔叶杂草抗性增加,优势种杂草种类发生变化,恶性阔叶杂草(如猪殃殃等)在部分地块逐渐由零星发生上升为主要优势种杂草,导致防治困难。该试验是为了验证新型除草剂50克/升双氟磺草胺,对冬小麦田一年生阔叶杂草特别是恶性阔叶杂草防治效果和适宜剂量,为大田推广提供科学依据。
First, the purpose of the experiment Winter wheat is the main food crops in central Hebei, perennial planting area of more than 200 million hectares. In recent years, due to continuous use of sulfonylurea systemic conduction herbicide (tribenuron-methyl), broad-leaved weeds increased resistance, the dominant species of weeds changed, the vicious broad-leaved weeds (such as Galium aparine Etc.) in some plots gradually from sporadic to as the dominant dominant species of weeds, leading to prevention and treatment difficulties. The experiment is to verify the new herbicide 50 g / L floxulam, winter wheat broad-leaved weeds in winter, especially the control of broad-leaved weeds and the appropriate dosage for the promotion of the field to provide a scientific basis.