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去冬今春,庆阳地区冬小麦发生了严重死亡。死亡在四成以上的冬麦田达225万亩,占冬麦面积的79.2%;绝苗翻耕的52万亩,占冬麦面积的18.3%,是本地区五十多年来冬小麦死亡最严重的一年。一、死亡症状:冬小麦死亡主要有三种症状:第一种是根茎脱水,主根、次生根枯死,一拔即起。大量存在于冬前和返青期。第二种是植株基部分蘖节处呈竭色变软,似烫伤,甚至霉烂变黑,不易拔起。第三种是小麦返青期叶片枯黄,基部组织较软,不生新根,逐渐
Winter to spring, Qingyang winter wheat serious death occurred. The death of more than 40% of the winter wheat fields reached 225 million mu, accounting for 79.2% of the area of winter wheat; 520,000 acres of seedling tillage, accounting for 18.3% of the area of winter wheat, the region more than 50 years of winter wheat deaths the most serious Year First, the symptoms of death: There are three main symptoms of winter wheat death: the first is rhizome dehydration, the main root, secondary root wither, pull up. Prevalent in winter and rejuvenation period. The second is the plant at the end of the tiller section was bleaching color becomes soft, like scald, and even rotten black, not easy to pull up. The third is yellowing leaves turning green wheat, the basal tissue is softer, no new roots, and gradually