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1 “野生麦”的危害特点“野生麦”发生范围广,传播速度快。据田间调查,大部分麦田“野生麦”的比例占整个麦田的3%～5%,严重的高达16%。“野生麦”繁殖速度快、分蘖力强、成穗率高,一般单株可成穗5～8个,甚至还可成穗10个以上。株高一般在100～130em,比栽培小麦品种高20～50cm,秆细,成熟后易倒伏。粒小秕瘦,千粒重25g 左右,易脱落,与栽培品种争肥、争水、争光,造成小麦产量降低、品质下降,如不及早防治,将对小麦生产造成严重威胁。
1 “Wild Wheat ” Hazard Characteristics “Wild wheat ” occurs a wide range, spread fast. According to field surveys, the proportion of most wheat fields and “wild wheat” accounts for 3% to 5% of the entire wheat field and a serious increase of 16%. “Wild wheat ” Reproduction speed, strong tillering ability, high ear rate, the general plant can be spike 5 to 8, and even into the spike more than 10. Plant height is generally 100 ~ 130em, 20 ~ 50cm higher than cultivated wheat varieties, straw fine, easy to lodging after ripening. The grain is small and thin, the grain weight is about 25g, it is easy to fall off, fight the fertilizer with the cultivated species, compete for water and win glory, resulting in the decrease of wheat yield and the decline of quality. Without early prevention and control, it will pose a serious threat to the wheat production.