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西洋参直播栽培采种次数对西洋参产量和质量有一定影响。3，4年连续两年采种减产40．5％；3年或4年生采种一次，分别减产15．7％和23．1％。采种组比对照组优质参率下降1．5～5．5个百分点，折干率下降1．2～1．4个百分点，3、4年连续两年采种组与三年生采种组比对照组氨基酸总量分别降低10．753和3．137个百分点。
American ginseng direct seeding cultivation of American ginseng yield and quality have a certain impact. 3, 4 years mining cut for two consecutive years 40.5%; 3 or 4 years of mining once, respectively, cut 15.7% and 23.1%. Compared with the control group, the quality parameters of the seed collection group decreased by 1.5-5.5 percentage points and the drying loss rate decreased by 1.2-1.4 percentage points. Compared with the control group, the seed collection group and the perennial collection group for 3-4 years Total amino acids decreased 10.753 and 3.137 percentage points respectively.