利用甘薯藤越冬做种好处很多:首先,每667平方米可节约薯种50公斤以上;其次,薯藤经过一冬的生长,根系发达、营养充足、秧苗粗壮,栽插后活棵快、发秧早、生长旺盛、产量高;再次,选剪健壮无病的薯藤做种,能减轻病害,防止种性退化。其技术是: 一、温床准备 选择背风向阳,排水好,距水面1.5米以上的坡面建造温床。温床深1米左右,最下面铺0.5米厚的稻草或蒿草,踩实。草上放一层土、一层牛粪(或猪粪),踩实;然后再放一层土、一层猪粪(或牛粪),踩实;最上层盖土和粪的混合物,厚度为0.3米。温床北面用稻草堆一堵防风墙。 二、薯藤栽插 霜降前栽插。栽前选择节密、茎粗、叶片正常,没有病虫的薯藤,在薯藤中部剪取留5个节的藤段做扦插苗,去掉叶片,仅留芽苞。按南北向打洞栽插或开沟扦插,株距3 The use of sweet potato vine wintering do a lot of benefits: First of all, every 667 square meters can save 50 kilograms of potato; secondly, after a winter’s root growth, roots developed, adequate nutrition, sturdy seedlings, Seedling morning, vigorous growth, high yield; again, picking scissors robust disease-free potato rattan species, can reduce disease and prevent species degeneration. Its technology is: First, the hotbed ready to choose leeward sunny, good drainage, 1.5 meters above the water from the slope to build a hotbed. Depth of 1 m deep hotbed, the bottom of the shop 0.5 meters thick straw or wormwood, step on real. Put a layer of soil on the grass, a layer of cow dung (or pig manure), trample real; and then put a layer of soil, a layer of pig manure (or cow dung), trample; top cover soil and manure mixture, the thickness It is 0.3 meters. The northern side of the hotbed is covered with a windbreak. Second, planting potato frost plug before falling. Planting before the selection section dense, thick stems, leaves normal, no pests of potato vines, cut in the middle of the potato vine leaving five sections of the rattan to do cutting seedlings, remove the leaves, leaving only Buds. According to North-South to cut holes planted or cuttings, spacing 3