唐薯2号是丰南市科委1991年从中国科学院引人三株材料，经过六年的精心选育而成的一个高产、早熟、优质抗病新品种。1贝7年经唐山市品种审定委员会审定。该品种生长势旺盛，前期先国盘生长，伸变后即开始结薯，茎蔓短粗，平均单株分枝5．2个，茎蔓总长度450an，茎粗0．6an。苗 Tangshu No.2 is a high-yielding, precocious and high-quality new disease-resistant variety cultivated by Fengnan Municipal Science and Technology Committee in 1991 after introducing three materials from the Chinese Academy of Sciences after six years of careful breeding. 1 Bay 7 years by the species approval committee of Tangshan approval. The varieties grow vigorously, pre-first-country growth, degeneration began after the tuber, stem and stubby, with an average of 5.2 branches per plant, the total length of stem and vine 450an, stem diameter 0.6an. seedling