摘要
根据玉米氮、磷、钾"3414"回归设计田间试验的结果,分别建立产量为目标函数的氮磷钾三元二次、氮磷、氮钾、磷钾二元二次及氮、磷、钾一元二次3类7种肥效模型,根据各肥效模型提供的施肥参数和产量期望的经济效益分析结果,决选出氮肥的一元二次效应模型提供的施肥决策:施纯氮333.66kg/hm2、五氧化二磷120.00kg/hm2、氧化钾90.00kg/hm2,产量期望9196.50kg/hm2,产投比6.39,能兼顾产量与肥料投资效益,作为延津县夏玉米生产的推荐施肥量。
Based on the data measured from＂3414＂regression design field experiments of corn, the NPK, NP, NK, PK binary and N, P, K quadratic 3 categories 7 kinds fertilizer models were established as the objective function of corn yield. According to the analysis of the expected fertilization parameters provided by the fertilizer models and yield economic benefits, decision-making fertilization provided by N fertilizer quadratic effect model were determined：the application of pure N was 333.66 kg/hm2, P205 was 120.00 kg/hm2, K20 was 90.00 kg/hm2, yield expectations was 9 196.50 kg/hm2, output to input ratio was 6.39. Taking into account the yield and fertilizer efficiency, it can be used as recommended fertilizer of maize production in Yanjin County.
出处
《现代农业科技》
2011年第1期50-51,53,共3页
Modern Agricultural Science and Technology
基金
2005年河南省测土施肥试点补助资金项目
关键词
玉米
3414
肥效模型
经济效益
推荐施肥量
河南延津
maize
3414
fertilizer effect model
economic effect
recommendcd formula
Yanjin Henan
