Effect of Planting Density on Yield of Different Leaf Types of Vegetable-used Sweet Potato
[Objective] In order to explore the optimum planting density of different types of vegetable-used sweet potato.[ Method] This paper studied the effects of different varieties and density on yield using large-size leaf type Fushu7-6, small-size leaf type Shulü No.1 and medium-size lobbed type line Xucaishu No.2 as experimental materials.[Result] Yield of large-size leaf type Fushu7-6 was the highest in the same density, and yield of small-size leaf type Shulü No.1 was the lowest.So, leaf size has a great impact on yield.The yield of the same cultivar was different at different cultivated densities, among which the yield of Shulü No.1 and Xucaishu No.2 was higher in high planting density,the optimum density was 20 cm ×20 cm to 20 cm ×15 cm.The effect of different density treatments on the yield of large-size leaf type Fushu 7-6 was not significant, which can be appropriate to reduce the planting density to 20 cm × 25 cm if cultivation conditions was good.[ Conclu-sion] The research can offer reference for planting vegetable-used sweet potato
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