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黑龙江省春季地温低、风大,一般年份都是干旱少雨,而龙胆草从种籽萌发到幼苗前期生长对环境条件要求十分严格,种子萌发及出苗后地表层有短时间失水出现干土层时,幼苗会迅速死亡,致使春天在田间育苗管理困难、用工多、成苗率低。我们在龙胆变家种试验中,采用塑料大棚控温控湿育苗,创造龙胆草幼苗期生长所需要的最佳环境条件。通过四年试验证明,这种育苗方法表现出苗均匀整齐,生长迅速,育苗量大,人工操作和管理方便,整个生长期长达150多天。因此在植株形态上表现出与野生苗有明显的不同。现将塑料大棚育苗方法分述如下。
Heilongjiang Province in spring low ground temperature, the wind, the general years are arid, and gentian from seed germination to early seedling growth requirements of the environmental conditions are very strict, seed germination and emergence after emergence of a short time on the surface soil dry soil Layer, the seedlings will die quickly, resulting in spring field nursery management difficulties, more labor, low seedling rate. We are in the gentian variety test, the use of plastic greenhouse temperature control wet nursery, gentian grass to create the best growth of seedlings required environmental conditions. Through four years of tests, this seedling breeding method showed uniform and neat growth, rapid growth, large nursery volume, convenient operation and management, and the growth period was over 150 days. Therefore, the plant morphology showed obvious differences with the wild seedlings. Now plastic greenhouse nursery methods are described below.