能源型甘薯高产栽培技术研究

为了提高甘薯产量,同时为大规模生产提供技术支持,选取甘薯栽培技术中的移栽时间、种植密度、起垄宽度、起垄高度4个因素,每个因素设3个水平进行正交试验研究.结果表明:各因素对产量指标影响的主次依次为移栽时间、种植密度、起垄宽度、起垄高度；各组合中以第5组合(5月20日移栽,种植密度300株/67 m2,起垄宽度70 cm,起垄高度40 cm)的产量最高.从试验结果来看,适时早插,起垄适当,合理施肥是提高甘薯产量的重要栽培管理措施.

Research on High Yield Cultivation Techology of Energy Type Ipomoea batatas

In order to improve the yield of Ipomoea batatas Lam.,and provide technical support for large-scale production,orthogonal test was applied to study the effects of transplanting time,planting density,ridge width and ridging height on the yield of sweet potato.The result showed that the primary-secondary order of the influencing factors was transplanting time,planting density,ridge width,ridging height.The highest yield was obtained in the fifth combination(transplanting on 20th May,planting density of 4.5 ind./ m2,ridge width of 70 cm,ridge height of 40 cm).Timely planting early,proper ridge form and rational fertilization are crucial cultivation and management measures.