“双膜”育苗,是指出苗前除了在苗床上搭斜坡或小拱棚所需的一层塑料薄膜外,苗床上还需再盖一屋地膜或常用膜。该技术比冷床单膜覆盖采苗量l平方米增加300～500株,出苗提早3～5天,而且苗齐、苗壮。这种育苗方法适合广大农户在春夏薯、烟薯套、两薯套或麦薯套区应用。其操 “Double membrane ” nursery, refers to pre-emergence except in the seedbed on the slopes or small shed required plastic film, the seedbed need to re-cover a house film or film. The technology covers the cold sheet than the single film cover the amount of l square meters increased by 300 to 500 strains, emergence 3 to 5 days earlier, and Miao Qi, Miao Zhuang. This method of nursery for the majority of farmers in the spring and summer potato, potato sets, potato sets or two potato sets of applications. Its operation