【摘要】 通过在渭北旱原不同类型区布设的６因素、５水平、多重复和多试验点的田间试验，探讨了影响春玉米高产的农艺措施。试验表明，氮肥是影响产量的第一位因素，次为密度，磷肥、钾肥影响不稳定，单施有机肥增产作用小，建立了春玉来高产农艺措施的数学模型，提出了春玉米高产的农艺措施组合方案，为发展渭北旱原的春玉米生产提供了科学依据和量化指标。更多还原

【Abstract】 This paper discusses the effect of main agronomic practice on high一 yielding spring corn through field experiments with 6 factors,5 levels, more replications and more experimental points laid out in different locations on Weibei Rainfed Highland. The results show that the first factor affecting corn yields in N fertilizer,the next is plant densities,the effect of P and K fertilizers upon corn yields is unstable,and thesingle application of organic fertilizer to corn has only a little effect upon corn yields. Also,in this paper,an agronomic mathematical model for high一yielding spring corn wasset up,and agronomic technical package for high一yielding spring corn is suggestedthereby to provide the scientific base and quantitative indexes for spring corn productionon Weibei Rainfed Highland.更多还原