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甘薯二级火炕育苗法,是把原来经过火炕(或温床)育出的薯苗,在大田地温不高的情况下,薅出移植到另外专建的火炕(或温床)上,通过人工加温、加水、加肥,促使薯苗快速生长,进行多代繁殖,然后移栽大田。这一育苗法的好处是:能够在很短的时期内,迅速培育出大量的薯苗,大大提高种薯的利用率,加速良种普及,并保证薯芽肥壮,适时栽种。现在根据河南省鲁山县经验,把甘薯二级火炕育苗方法介绍如下:
Sweet potato two kang nursery law, is the original kang (or hotbed) after the birth of potato seedlings in the field under the conditions of not high temperature, out of the transplant to another special built on the kang (or hotbed), by artificial heating , Add water, add fertilizer, prompting the rapid growth of potato seedlings, multi-generation breeding, and transplanting the field. The benefits of this nursery method is: to be able to quickly cultivate a large number of potato seedlings in a very short period of time, greatly improve the utilization of seed, speed up the popularization of seed, and to ensure that potato buds fat, timely planting. Now based on the experience of Lushan County, Henan Province, the sweet potato two kang nursery method described below: