一、育苗 (一)圃地准备。选择土壤肥沃、排水良好、地下水位较低的地方作苗圃地,施足基肥,精耕细作,整成苗床。苗床中间略呈龟背形。 (二)育苗方法。主要有以下几种: 1.播种育苗。播种前种子可用温水浸泡15～20小时,再用清水浸泡10小时,捞出催芽,温度控制在20～25℃,种皮裂开后即可播种。播种一般在3～4月,多用条播,行距25厘 First, nursery (a) nursery preparation. Select the fertile soil, well-drained groundwater table for the lower part of the nursery, Shizujifei, intensive cultivation, the formation of seedbed. The middle of the seedbed was slightly turtle shape. (B) nursery methods. There are several main types: 1. Seeding nursery. Seeds before sowing can be soaked in warm water for 15 to 20 hours, and then soaked in water for 10 hours, remove the germination, temperature control at 20 ~ 25 ℃, the seed coat can be sown after cracking. Sowing generally 3 to 4 months, more use of broadcast, spacing 25%