Effects of Different Planting Densities on the Yield of Sinopodophyllum hexandrum Seedlings

[Objective] To explore the change law of Sinopodophyllum hexandrum yield under different densities and seek the optimal planting density, so as to provide the scientific basis for forest-herb intercropping and GAP planting of S. hexandrum in fields. [Method] Under the same soil, fertilization and management method, S. hexandrum seedlings were planted under 12 different densities. [Result] The optimal planting density was 80 000-130 000 seedlings per hectare. There were obvious increases in the yield and income of S. hexandrum, that is, significant economic benefit when the plant spacing and line spacing were 25-30 and 30-35 cm, respectively. [Conclusion] It is appropriate to plant 80 000-130 000 S. hexandrum seedlings per hectare with the purpose of increasing both yield and income.