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有了优良品种,即不增加劳动力、肥料,也可获得较多的收成。“九二○”番薯新品种是我所于1965年采用“舟农白皮”与“52—45”杂交的后代选育而成。经广大贫下中农试验鉴定,一般鲜薯比“舟农白皮”、“港白头”等增产一成以上,晒丝率提高3—5％,藤叶产量也增加7.8％左右。“九二○”系中蔓型(140厘米左右),有半直立性,顶叶紫红色,藤粗叶大,叶卵圆形。薯块品质好,耐贮藏,皮粉红(淡红),肉淡黄,薯块圆形或纺锤形,结薯较早、较
With excellent varieties, that is, without increasing labor, fertilizer, but also get more harvest. The “920” sweetpotato variety is a result of the breeding of the descendants of “sweet potato” and “52-45” by our institute in 1965. The majority of poor peasants and middle peasants test identification, the general fresh potato than the “boat white peasants”, “Port whitehead” such as an increase of more than 10%, basking rate increased by 3-5%, vine leaf yield also increased by 7.8%. “920” series in the Man-type (about 140 cm), semi-erect, parietal purple, rattan coarse leaves, leaves oval. Quality of potato tubers, storage resistance, pink leather (pink), yellow meat, potato block round or spindle-shaped, tuber earlier, more