高淀粉甘薯0409-17高产栽培模式研究

Study on High-Yield Planting Pattern for the High-Starch Sweetpotato Variety 0409-17

采用三元二次正交旋转组合设计的方法,研究了种植密度和磷、钾肥施用量对高淀粉甘薯品系＂0409-17＂产量和淀粉的影响.结果表明,在种植密度为47 325~53 820株/hm2、施过磷酸钙（含P2O512%）115.5~367.5 kg/hm2、施氯化钾（含K2O 60%）27~226.5 kg/hm2的栽培模式下,能充分发挥该品系高产和高淀粉的潜力,甘薯鲜薯产量超过22 536.15 kg/hm2、淀粉产量超过5 679.3 kg/hm2.

The quadratic orthogonal rotation combination design was used to study the effects of P and K fertilizer rates and planting density on the yield of the high-starch sweetpotato line 0409-17.The results showed that the cultivation model with a planting density of 47 325-53 820 plants/hm2,a P rate of 115.5-367.5 kg/hm2 of superphosphate calcium（12% P2O5） and a K rate of 27-226.5 kg/hm2 of potassium chloride（60% K2O） realized the potential of high tuber and starch yield of 0409-17,the fresh tuberous root yield and starch yield being 22 536.15 kg/hm2 and 5 679.3 kg/hm2,respectively.