【摘 要】
：
为探讨小麦新品种周麦23号的高产优质配套栽培措施,采用三因子二次正交旋转组合设计,研究了播期(X1)、播量(X2)、追肥量(X3)对周麦23号主要农艺性状和品质特性的影响.结果表
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为探讨小麦新品种周麦23号的高产优质配套栽培措施,采用三因子二次正交旋转组合设计,研究了播期(X1)、播量(X2)、追肥量(X3)对周麦23号主要农艺性状和品质特性的影响.结果表明,周麦23号的株高主要受播期影响,在10月21日播种时,株高最低(80.7cm),10月10日播种植株最高(90.27 cm).产量主要受播期、播量和追肥量的共同作用,建立的产量模型:Y=10660.49-520.18X1-233.93X3-166.38X22+237.56X2X3,在10月10日播种,216万苗/hm2基本苗,追肥量225 kg/hm2时,预测产量将达最大值,为12161.91kg/hm2.播量和追肥量与周麦23号穗数和穗粒数分别表现为二次曲线和线性关系,而千粒重同时受播期、播量和追肥量的共同作用.周麦23号的沉降值、揉混仪峰宽、8 min带宽均受播期和追肥量互作影响,和面时间受播期、播量与追肥量的共同作用.建议周麦23号在高肥水地块于10月13日播种,基本苗216万～270万苗/hm2,于拔节期追施尿素225～255 kg/hm2,若遇暖冬年份,播种期可适当推迟,增加播量.
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