马铃薯威芋3号高产、高效栽培模型研究

试验采用二次回归正交旋转组合设计,研究威芋3号优质、高产新品种的生产成本,纯收益,产投比与密度、氮、磷、钾肥施用量间的优化数学模型,在对模型进行分析的基础上进行计算机模拟试验,提出两套威芋3号高产、高效栽培技术模型:①产投比高于1.78,纯收入高于4000元.hm-2的高产、高效栽培模型:密度为39982.5￣42750.0窝.hm-2,纯(N)施用量为43.969￣50.918 kg.hm-2;P2O5施用量为127.08￣142.92 kg.hm-2;K2O施用量为137.430￣156.668 kg.hm-2。②产投比高于2,纯收入高于4500元.hm-2的高产、高效栽培模型:密度为40440￣43050窝.hm-2;纯(N)施用量为44.37￣52.83 kg.hm-2,P2O5施用量为126.180￣135.945 kg.hm-2;K2O施用量为143.303￣164.430 kg.hm-2。

Mathematical Model for High Yield and High Profit Ability of the Potato Cultivar Weiyu 3

In the quadratic regression orthogonal rotation design,mathematical models on the relation of production cost,profit ability,and output to investment ratio with plant density,and nitrogen,phosphorus,and potassium fertilizer application were studied using the high yield and high quality cultivar Weiyu 3 as plant material.Based on the analysis of the models,computer simulation was carried out and two production models were created,aiming at high yield and high profit.For the model aiming at the output to investment ratio 1.78,and profit 4 000 RMB·hm-2,the plant density should be 39 983-42 750 plant·hm-2,the pure nitrogen application rate 43.97-50.92 kg·hm-2,P2O5 application rate 127.08-142.92 kg·hm-2,and K2O application rate 137.43-156.67 kg·hm-2.For the model aiming at the output to investment ratio 2,and profit 4500 RMB·hm-2 or more,the plant density should be 40 440-43 050 plant·hm-2,the pure nitrogen application rate 44.37-52.83 kg·hm-2,P2O5 application rate 126.18-135.95 kg·hm-2,and K2O application rate 143.30-164.43 kg·hm-2.