广德县冬小麦田杂草发生规律及防治技术

Occurrence Regularity and Control Techniques of Weeds in Winter Wheat Field in Guangde County

通过2010—2014年对广德县小麦田杂草的调查,发现可明显查见的杂草有18种左右。小麦播期墒情较好的情况下出草较为整齐,时间为11月上旬,12月中旬杂草出草基本结束。在小麦播后覆土的同时(最迟不超过播后2 d)进行土壤封杀,是控制杂草密度最关键的措施。茎叶化除时间可根据小麦苗情及草情酌情适当推迟,可选在12月上旬杂草大部出草后进行。

Based on the investigation of weeds in winter wheat field in Guangde County during 2010-2014, 18 kinds of weeds were found obviously. The weeds germinated commonly in early November when the soil moisture was good in wheat sowing stage, and the germination of weeds was basically finished in the middle of December. Sealing weeds when covering soil （no later than 2 days） after wheat sowing was the key measure to control weeds. The time of chemical treatment for weed stems and leaves could be appropriately delay according to wheat and weed seedling situation, and the optimal time was early December that most of weeds germinated.