关键词: 半夏[Pinellia ternata（Thunb.）Breit], 间作, 生长, 种间竞争力, 产量, 药材质量

Abstract: The effects of intercropping soybean on the growth and quality of Pinellia ternata（Thunb.）Breit were studied. Under normal Pinellia ternata（Thunb.）Breit sowing density,three soybean planting distances of 35 cm, 50 cm and 65 cm were adopted to measure the changes of Pinellia ternata（Thunb.）Breit growing environment, growth, yield and quality of Pinellia ternata（Thunb.）Breit, then the land equivalent ratio and interspecies competitiveness under the intercropping system were further analyzed. The results showed that with the increase of soybean planting density, the canopylight intensity, the leaf surface temperature and the soil temperature of Pinellia ternata（Thunb.）Breit were all decreased, whereas the main leaf area, petiole length and SPAD value of Pinellia ternata（Thunb.）Breit were significantly increased in the inter cropping system. The land equivalent ratio in the intercropping system increased, and soybean was more competitive than Pinellia ternata（Thunb.）Breit; Intercropping soybean significantly increased Pinellia ternata（Thunb.）Breit yield and thousand-grain weight. Under the condition of soybean with the 50 cm plant spacing had the highest Pinellia ternata（Thunb.）Breit yield, an increase of 42.9% compared to Pinellia ternata （Thunb.）Breit monoculture; The quality of Pinellia ternata（Thunb.）Breit had no significant difference compared with the control,and all meet the requirements of Chinese pharmacopoeia. Intercropping soybean provides a better growing environment for Pinellia ternata（Thunb.）Breit, strengthens the growing tendency of Pinellia ternata（Thunb.）Breit and increases the yield.

Key words: Pinellia ternata（Thunb.）Breit, intercropping, growth, interspecies competitiveness, yield, medicinal material quality