马铃薯高产高效栽培模型研究

Study on the Model of High-yielding and-efficiency Potato Culture

采用2次回归正交旋转结合设计方法,研究马铃薯白引1号生产成本、纯收益、产投比与密度、氮、磷、钾施用量间的优化数学模型。在分析模型的基础上,模拟试验提出两套马铃薯高产、高效栽培技术模型,即产投比高于1.69,纯收入高于4000元/hm2,密度40312.5～42975kg/hm2,纯N45.045～52.5375kg/hm2,P2O5126.495～143.505kg/hm2,K2O147.015～160.99kg/hm2;产投比高于2,纯收入高于4500元/hm2,密度39697.5～43807.5kg/hm2,纯N42.323～51.57kg/hm2,P2O5124.695～145.305kg/hm2,K2O133.515～165.848kg/hm2。

With the design of combination quadratic recursive with obverse cross circumrotate, the experiment in the optimum mathematics model of potato production with high grade and high yield was conducted. Based on analysis of the model, two models of high yield and high efficiency were worked out through the simulated test by computer. The model of the ratio of output to cost being more than 1.69 and the pure proceeds being more than 4 000 yuarghm2 was that the planting density range was from 40 312.5 to 42 975 per hm^2, the dosage range of pure N was from 45.045 to 52.537 5 kg/hm^2, the dosage range of P2O5 was from 126.495 to 143,505 kg/hm^2 and the dosage range of K2O was from 147.015 to 160,99 kg/hm^2, The model of the ratio of output to cost being more than 2 and the pure proceeds being more than 4 500 yuan/hm^2 was that the planting density range was from 39 697.5 to 43 807.5 per hm^2, the dosage range of pure N was from 42.323 to 51.57 kg/hm^2, the dosage range of P2O5 was from 124.695 to 145.305 kg/hm^2 and the dosage range of K2O was from 133.515 to 165.848 kg/hm^2.