【摘要】 研究种植密度及施肥水平对三角叶薯蓣产量的影响,为三角叶薯蓣高效栽培提供理论依据和指导。采用种植密度、有机厩肥、氮肥、磷肥、钾肥5个可控栽培因子4水平正交试验设计,16个处理,3次重复,小区面积12 m2。试验结果表明:16个试验处理的产量折合在6241.67~26416.67 kg/hm2之间,种植密度、钾肥用量、底肥用量、氮肥用量4个试验因子F值达到极显著水平,磷肥用量F值达显著水平,不同试验处理对三角叶薯蓣产量影响显著。种植密度15万株/hm2,施用底肥45000 kg/hm2,氮肥375 kg/hm2,磷肥750 kg/hm2,钾肥480 kg/hm2为该试验设计的最优试验组合。合理的种植密度和施肥配比能有效提高三角叶薯蓣的产量;种植密度、钾肥用量、底肥用量、氮肥用量是影响三角叶薯蓣产量的关键因子。更多还原

【Abstract】 The paper studied the effects of planting densities and fertilization level on the yield of Dioscorea deltoidea, in order to provide references for high efficiency cultivation. The orthogonal experiment wasdesigned with five controllable factors, the planting density, organic manure, nitrogen fertilizer, phosphatefertilizer and potash fertilizer, and four levels, 16 experimental treatments and 3 repeats were conducted andthe area was 12 m2. The results showed that the yields of the 16 experimental treatments were 6241.67-26416.67 kg/hm2. The test F value of the four factors, planting density, potash fertilizer amount, organicmanure amount and nitrogen fertilizer amount reached extremely significant level, F value of phosphatefertilizer amount reached significant level. The different treatments had significant effect on the yields of D.deltoidea. The best experiment combination was the planting density of 150000 plants/hm2, with the applicationrate of base fertilizer, nitrogen fertilizer, phosphorus fertilizer and potash fertilizer as 45000 375, 750 and480 kg/hm2, respectively. Reasonable planting density and fertilization ratio could effectively improve the yieldof D. deltoidea. Planting density, and the amount of potash fertilizer, base fertilizer and nitrogen fertilizer werethe key factors to affect the yields of D. deltoidea.更多还原