半夏配方施肥模型研究

Study on Formula Fertilization Model of Pinellia ternate

[目的]为了研究半夏配方施肥模型。[方法]采用四因素二次旋转组合设计,通过研究有机肥、N、P2O5、K2O施用量对半夏纯收入和产投比的影响,建立相应的回归方程,并通过计算机模拟寻优,提出两套半夏高产高效施肥模型。[结果]半夏高产、高效施肥最优方案为：①投产比高于1.40,纯收入高于27000元/hm^2,有机肥、尿素、普钙、硫酸钾施用量为87493.725～99 739.845、687.944～785.492、4437.218～4474.887、680.340～1 059.730 kg/hm^2;②投产比为1.6时,纯收入达到34 500元/hm^2,有机肥、尿素、普钙、硫酸钾施用量为101600.775～109164.555、710.755～823.912、4302.150～5612.805、558.679～712.356。[结论]提高半夏产量、纯收入、产投比的关键是在一定范围内提高厩肥和磷肥的施用量,其次是氮肥、钾肥的施用。

[Objective] The aim was to study formula fertilization model of Pinellia ternate.[Method] The corresponding regression equation was established through studying the effects of organic fertilizer,N,P2O5 and K2O application amount on net income and input-output ratio of P.ternate by four factors quadratic rotation combination design and two models of high-yield and high-efficiency fertilization of P.ternate was proposed through simulating and optimizing by computer.[Result] The optimum scheme on two models of the high-yield and high-efficiency fertilization of P.ternate was that when the input-output ratio was higher than 1.40 and the net income was higher than 27 000 yuan/hm^2,the application amounts of organic fertilizer,urean,calcium superphosphate and potassium sulfate were 87 493.725～99 739.845、687.944～785.492、4 437.218～4 474.887 and 680.340～1 059.730 kg/hm^2 resp.and when the input-output ratio was higher than 1.60 and the net income was up to 34 500 yuan/hm^2,the application amounts of organic fertilizer,urean,calcium superphosphate and potassium sulfate were 101 600.775～109 164.555、710.755～823.912、4 302.150～5 612.805 and 558.679～712.356 kg/hm^2 resp.[Conclusion] The key to increase the yield,net income and input-output ratio of P.ternate was to increase application amounts of barnyard manure and phosphorous fertilizer to some extent.The next was application of N fertilizer and K fertilizer.