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一、品种选择华北地区早春气温回升较快,多选择抗病脱毒的中早熟品种,如鲁引1号、津引8号、东农303、荷兰15等。二、种薯催芽 (一)种薯切块选表皮光滑、无病斑虫眼的作种薯。切块注意:(1)靠近芽眼,切成三角形,每块有1～2个芽眼,重25 g左右;(2)切到病薯时去掉,将刀片用95%酒精消毒再用。 (二)催芽 1月20日左右开始,在日光温室或改良阳畦内催芽,催芽床挖深15～20cm,长宽依薯量而定。铺湿细土或细沙10cm,上放一层薯块,芽眼向上,覆细土1 cm,
First, the choice of species North China early spring temperatures picked up faster, more choice disease-resistant mid and early maturing varieties, such as Lu cited No. 1, Tianjin cited No. 8, Dongnong 303, the Netherlands 15 and so on. Second, the seed germination (a) cut the seed selection of skin epidermis smooth, no spot insects for seed. Cut the note: (1) close to the bud eye, cut into triangles, each with 1-2 buds, weighing 25 g or so; (2) cut into the diseased potato removed, the blades disinfected with 95% alcohol reuse. (B) germination Beginning January 20, germination in the sun greenhouse or improved Yangzhang, sprouting bed digging depth 15 ~ 20cm, depending on the amount of potato length and width may be. Shop wet fine soil or fine sand 10cm, put a layer of potato block, bud eye up, cover fine soil 1 cm,