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红薯育苗的方法很多,我省普遍采用的有露地育苗、酿热温床育苗、薄膜覆盖育苗等方式。目前在广大农村以小拱棚薄膜覆盖育苗和大棚育苗居多。其育苗方法如下:一、育苗时间我省一般在3月中旬至4月中旬,当气温在15℃以上时开始育苗,湘南宜早,湘北及高海拔地区可适当推迟。选用无病菌、背风向阳、地势平坦、排水良好、地下水位低的地块作苗床。
There are many ways to cultivate sweet potato seedlings, which are widely used in our province, such as open field nursery, hot seedling nursery, film covering and nursery. At present, in the vast rural areas with small arch shed film nursery and greenhouse cover nursery majority. The nursery methods are as follows: First, the nursery time in our province is generally mid-March to mid-April, when the temperature starts above 15 ℃ nursery, southern Hunan should be early, northern Hunan and high-altitude areas may be postponed. Selection of bacteria-free, leeward sunny, flat, well-drained, low groundwater table for the seedbed.