烟子下床,“管”字上马。苗床管理任务主要有以下八条,也叫“八管”。 1.管农膜 苗床盖膜要舒展,不皱、不扭、不破损,两边要用土压实,拱顶要用麻绳拉紧,以防刮风揭膜。 2.管水分 十字期保持床面湿润:伸根期适当控水,苗床土似干非 Tobacco get out of bed, “Guan” words launched. Seedbed management tasks are the following eight, also known as “eight tube.” 1. The plastic film seedbed membrane to be stretched, no wrinkles, no twist, no damage, both sides of the earth to use compaction, vault rope to tighten with hemp to prevent windbreak. 2. Tube moisture to keep the bed wetted cross: the proper control of water during the root canal, seedbed soil dry like