【摘要】 以青薯6号为试验材料,氮肥、磷肥、钾肥、密度为试验因素,利用二次通用旋转组合设计,研究了不同施肥量和密度对马铃薯产量的影响。研究结果表明,对马铃薯产量影响程度大小依次为密度>磷肥>钾肥>氮肥,磷肥与氮肥、钾肥均为正互作,氮肥、钾肥之间是负互作。青薯6号在青海西宁的最佳农艺措施为,氮肥:329.6～372.7kg/hm2,磷肥:229.0～253.4kg/hm2,钾肥:84.2～101.6kg/hm2,密度64 950～69 375株/hm2,此条件下目标产量可达到39 000kg/hm2。更多还原

【Abstract】 Using quadratic general rotation design,selecting nitrogen,phosphorus,potassium,density experimental factors to Qingshu-6 as test material,the effect of different fertilizer amount and density on potato yield were studied.The results showed that impact on potato yield in proper order of Density>P>K>N.There are positive interactions between phosphate and nitrogen,potassium.It’s negative interaction between nitrogen and potassium.The best agronomic measures of Qingshu No.6 in local were nitrogen 329.6-372.7 kg/hm2,phosphorus 229.0-253.4 kg/hm2,potassium 84.2-101.6 kg/hm2,density 64 950-69 375 plants/hm2,under these conditions,can achieve the target yield of 39 000 kg/hm2.更多还原