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甘薯茎蔓有着地生根的习性,我国薯区多有翻蔓习惯。其具体措施是:植株延蔓以后经常以棍棒或手把蔓从一边翻转到另一边。翻蔓的次数因年分及品种类型而有出入。江苏、安徽、山东等地区每雨后即翻蔓一次,对于长蔓品种翻动尤勤。用于翻蔓的劳力,一般每亩共约二、三个工。翻蔓的作用据说有三:(一)掼动藤蔓,促进养分向薯块运转;(二)折断蔓上扎生的不定根,防止养分消耗;(三)曝晒垅土,调节土壤温湿度,以利薯块成长,从而达到增产效果。 翻蔓始于何时何地,目前尚无从考证,
Sweet and sour stems have the habit of rooting, the potato area in our country more than a turn vine habit. The specific measures are: plant extension vine after often sticks or hand-cranked from one side of the flip to the other side. Turn the number of times due to the year and the type of species are different. Jiangsu, Anhui, Shandong and other areas that turn over once after the rain, especially for the long vine Variety Jubilee. Used to turn Man labor, generally about two or three per acre. The function of turning over the vine is said to have three functions: (1) to move the vine to promote the operation of nutrients to the potato tuber; (2) to break the adventitious roots of the vine and prevent the nutrient consumption; (3) to expose the soil to regulate the temperature and humidity of the soil, Potato growth, so as to achieve the stimulation effect. Turn began when and wherever there is no textual research,