地黄的栽培,历史悠久,且为最常用的中药材之一。近年来,随着中药材生产事业的飞跃发展,全国各地已普遍进行引种,家栽,并投入了大面积的生产,种植面积不断扩大,单位面积产量也成倍增长。根据目前各地栽培地黄的经验说明:地黄是喜肥的作物,在深耕密植的基础上,肥料是确保生产的首要条件。因此,一般栽培地黄,除了施足基肥之外,必需通过“根际追肥”的方式以供给植物各个发育时期所需之养料。在以往一般药农所习用的追肥多为人类尿或饼肥等,近年来已有应用无机化肥的趋势,并获得一定的增产效果。但目 The cultivation of Rehmannia root has a long history and is one of the most commonly used Chinese herbal medicines. In recent years, with the rapid development of Chinese herbal medicine production, introductions have been made widely throughout the country, home plants have been planted, and large-scale production has been invested. The planting area has continued to expand, and the yield per unit area has also multiplied. According to the current experiences of cultivated yellow everywhere, it is indicated that: Dioscorea is a hi-fertilizer crop, and on the basis of deep cultivation and close planting, fertilizer is the primary condition for ensuring production. Therefore, in general, to cultivate yellow, in addition to the base fertilizer, it is necessary to supply the nutrients needed for the various developmental stages of the plant through the “rhizophrenic top dressing.” In the past, most of the fertilizers commonly used by traditional medicine and peasants were human urine or cake fat. In recent years, there has been a tendency to apply inorganic fertilizers and obtain a certain increase in production. But