【摘要】 本研究运用组合设计的方法,对影响玉米产量的八个可控产量栽培措施——有机肥、氮、磷、钾化肥的施用量、密度,播期、追肥期、定苗期进行综合考察,从整体上建立了反映各个因素和产量间定量关系的数学模型;在计算机模拟选优的基础上,将一定生态生产条件下的理论最佳方案同生产上常规种植方法进行对比试验,取得了较好的效益。更多还原

【Abstract】 A Combination experimental design was used to investigate eight controll- ed factors affecting corn yield.The experimental treatments included:amo- unts of farmyard manure,nitrogen,phosphorus and potassium,plant density, dades of planting,dates of applying supplementary fertilizers,dates of fina thinning.Through the integrated quantitative analysis of the factors,mathem-l atical models were developed with respect to the interrelations among the fac- tors and their effects on the yield asawhole.On the basis of the results from computer simulation,certain environmental conditions were selected and com- pared to the traditicnal corn cultivating methods.Higher profit was obtained from the simulated desigo.更多还原