【摘要】 为充分发挥杂交中籼新组合Ⅱ优明118的增产潜力,更好地促进新品种的推广,运用二次正交回归旋转组合设计对Ⅱ优明118进行移栽叶龄、插植密度、施N量、施P量、施K量等5项栽培措施研究,建立产量与5项栽培措施的回归模型,分析各栽培措施对产量的影响。结果表明,5项措施对产量都有影响。通过计算机模拟,筛选出综合高产技术措施为:移植叶龄7.7～7.9叶,插植密度21.09万～22.59万丛/hm2,N肥施用量168.49～176.7kg/hm2,P2O5施用量84.26～90.64kg/hm2,K2O施用量96.98～102.86kg/hm2。更多还原

【Abstract】 In order to extend the combination and give full paly of its yield-increasing potential,the combination-ⅡYouMing 118 was studied by the method of quadratic regression rotation design. Five influential elements for the culture techniques were planting leaf age (x1),planting density(x2), nitrogen amount(x3),phosphorus amount (x4) and potassium amount(x5).A regression model for five cultivating factors and yield were established. The analysis result indicated that all of these factors affected the yield to some extend.According to the result of computer simulation screening,the high- yield cultivating techniques were 7.7 ～7.9 leaves for planting, 210,900 ～225,900 tillers per hm2,168.49～176.7 kg N per hm2,84.26～90.64 kg P2O5 per hm2,96.98～102.86 kg K2O per hm2.更多还原