论文部分内容阅读
合理密植是建立玉米高产群体的核心,也是发挥良种增产潜力的重要栽培措施。有关研究表明,玉米增产措施中,密度对玉米增产的贡献率为17.8%。玉米适宜密度的确定受品种、肥水和环境因素的综合影响,在陕西现有基础条件下,为了最大限度的发挥玉米的增产潜力,达到高产超高产的目的。本试验采用了3个优良玉米品种,在充分保证肥水供应的条件下,进行了不同群
Reasonable and close planting is the core of establishing corn high-yielding population, and also an important cultivation measure to exert the potential of yield-increasing yield. Relevant research shows that in the corn yield increase measures, the contribution rate of density to corn yield increase is 17.8%. To determine the suitable density of maize, under the combined effect of variety, fertilizer and environmental factors, under the existing basic conditions in Shaanxi, in order to maximize the yield potential of maize and achieve the purpose of high yield and super high yield. In this experiment, three excellent maize varieties were used, under the conditions of adequate supply of fertilizer and water, different groups