Abstract: 【Objective】 In order to determine the optimal planting density and row and plant spacing of edible sunflower in Hetao Irrigation District,and provide technical support and theoretical basis for high yield,high quality and high efficiency cultivation of edible sunflower in this area.【Methods】 Split zone test was used to design planting density of 21 000,24 000, 27 000,30 000,33 000 plants/hm²;large row spacing of 1.00,1.10,1.20 m,small row spacing of 0.40 m,0.38-0.68 m plant spacing for each treatment. And the best configuration of planting density and row and plant spacing of edible sunflower were compared and analyzed in Hetao Irrigation District.【Results】 The optimal planting density 27 000 plants/hm²,the row and plant spacing was 1.20 m for large row spacing,0.40 m for small row spacing and 0.46 m for plant spacing on edible sunflower in Hetao Irrigation District,the highest yield was 4 729.3 kg/hm²,which was significantly different from other treatments（P<0.01）,and the highest economic benefit was 34 996.8 yuan/hm². The next was the planting density of 27 000 plants/hm²,the row and plant spacing was 1.10 m for large row spacing,0.40 m for small row spacing and 0.49 m for plant spacing,the yield was 4 671.5 kg/hm² and the economic benefit was 31 858.6 yuan/hm².【Conclusion】 According to the results of comprehensive yield and economic performance analysis,the optimal planting density of 27 000 plants/hm²,the row and plant spacing was 1.20 m for large row spacing,0.40 m for small row spacing and 0.46 m for plant spacing on high yield,high quality and high efficiency cultivation of edible sunflower in Hetao Irrigation District.

Key words: Hetao Irrigation District, Edible sunflower, Planting density, Row and plant spacing