施氮水平与密度对马铃薯会-2产量影响的回归分析

目的]研究施氮水平与密度对马铃薯产量的影响。方法]采用二因素D饱和最优回归设计的试验方法,建立产量数学模型,并对各因素进行主效应分析。结果]结果表明,密度对产量的影响效应大于施氮水平,当施氮水平在212.25~384.90 kg/hm2,密度在36 698.70~84 040.80株/hm2范围时,理论产量可达27 555 kg/hm2左右。结论]草原类草地的最佳施氮水平为212.25~384.90kg/hm2,栽培密度为36 698.70~84 040.80株/hm2。

Effect of the Nitrogen Fertilizer and Planting Density on the Yield of Potato Variety Hui 2

Objective] The effect of the amount of N-fertilizer and planting density on potato yield was experimented.Method] The optimal design of two factors with D saturated was applied to analyze the main efficiency among the factors based on the establishment of mathematical model.Results] The results showed that the planting density affecting yield was greater than application amount of N-fertilizer.When the amount of N-fertilizer was 212.25-384.90 kg/hm2 and the planting density was from 36 698.70 to 84 040.80 plants/hm2,the theoretical yield of potato was up to about 27 555 kg/hm2.Conclusion] In the grassland of pasture the best application amount of N-fertilizer was 212.25-384.90 kg/hm2 and the planting density was from 36 698.70 to 84 040.80 plants/hm2.