莱阳沙参栽培历史悠久，驰名中外，沙令不仅是名贵中药材．而H营养价值极高．近几年来币场拓东不断增加，畅销国内外。由7‘技培技术过于落后，中产太低，总产滑下到城加，难u实现高产优质高放。因此，研究进出沙多高产优质高效栽培理论与技术．1上有现实意义。二年的“莱阳沙 Laiyang ginseng cultivation has a long history, well-known at home and abroad, sand is not only expensive Chinese herbal medicines. The H nutritional value is high. In recent years, the market continues to increase TouDong, selling at home and abroad. By 7 ’technology training is too backward, middle production is too low, the total output sliding down to the city plus, it is difficult to achieve high-yield high-quality high-quality. Therefore, research into and out of sand high yield and efficient cultivation theory and technology. 1 is of practical significance. Two years "Laiyang sand