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棉花是山东省荷泽地区的重要经济作物,种植面积达400万亩,占耕地面积的一半。由于连年种植,地理条件、品种和土壤条件的变化影响,近年来棉田较普遍地出现缺硼症,只现蕾,不开花,即“蕾而不花”。其典型症状是:下部叶片深绿,增厚变脆;上部叶片变小、卷缩、边沿失绿;叶柄有浸润状暗绿色,环带状突起,似节节状。严重影响着棉花的生长。
Cotton is an important cash crop in Heze, Shandong Province, with an acreage of 4 million mu, accounting for half of the cultivated land. Due to successive years of planting, geographical conditions, varieties and soil conditions change, in recent years, cotton fields more commonly appear boron deficiency disease, only budding, not flowering, that is, “bud instead of flowers.” The typical symptoms are: the lower leaves dark green, thickened brittle; the upper leaves become smaller, curling, margin green; Petiole infiltration of dark green, ring-shaped protrusions, like nodose. Seriously affected the growth of cotton.