适时育足壮苗是甘薯增产的首要关键。能够及时育出壮苗,防止发生“烂床”,实为生产上急待解决的一个问题。1961-1963年间,作者曾在山东农学院实习农场,对酿热温床育苗进行了一些试验和观察,现将结果简结如下,以供参考。 Adequate fertility seedlings are the key to the sweet potato yield. To nurture strong seedlings in a timely manner to prevent the occurrence of “rotten bed”, in fact, an urgent problem in production. From 1961 to 1963, the author had internship farm in Shandong Agricultural College and conducted some experiments and observations on the breeding of hot-stuffed seedlings. The results are summarized as follows for reference.