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小麦是山东冠县的主要粮食作物之一,常年种植面积在85万亩以上,总产42万t。近年来,麦田恶性杂草雀麦和节节麦的发生趋重,已成为当前影响小麦单产的主要因素之一。2010~2013年,麦田杂草雀麦、节节麦的发生面积逐年大幅度增加,2014年发生面积达到68万亩。由于杂草防除成本较高,加之农民化学防除技术掌握不成熟,对恶性杂草防控效果不理想,个别农民甚至毁种,改种其他作物。
Wheat is one of the main grain crops in Guanxian County, Shandong Province. Its perennial planting area is above 850,000 mu with a total output of 420,000 tons. In recent years, the occurrence of malignant weed and ryegrass in wheat fields has become one of the main factors affecting the yield of wheat. From 2010 to 2013, the occurrence area of weedy turfgrass, malted barley rose sharply year by year, reaching an area of 680,000 mu in 2014. Due to the high cost of weed control, together with immature peasant chemical control technology, the effect of preventing and controlling malignant weeds is not satisfactory. Some peasants even destroy seeds and re-plant other crops.