摘要
采用二因素二次饱和Ｄ－最优设计方法对小偃６号抽穗后绿叶面积动态变化进行了研究。结果表明，不同水肥措施对小麦抽穗后绿叶面积参数具有显著的调节作用，如不同处理绿叶持续天数为２７～４０天、绿叶持续期为９～２２天、单茎最大绿叶面积为８２～１０５ｃｍ￣２等；籽粒产量随绿叶持续期的延长而增加，与绿叶持续时间相关性不明显；小麦绿叶面积参数的优劣主要取决于氮肥的多少，底墒的调节作用有限；抽穗后维持较高绿叶面积和作用时间对提高产量具有重要意义。
Effects of nitrogen and soil moisture before planting on green leaf area after heading werestuied with optimum design and computer technique.Establish the mathematical function of thepramenters of green leaf area for wheat.Analysing the effects of this factors on green leaf areaand duration time and defined the high yield culture way to regulate this index.The results indi-cated that different treatment of soil moisture and nutrients showed significantly regulation on theparameters of green leaf area after heading,for example, whole green leaf duration of differenttreatment change from 27 to 40 days,green leaf duration change from 9 to 22 days,and maxi-mum leaf area of per plant change from 82 to 105 cm￣2.Grain yields is increasing with green leafduration extending and nonsignificantly correlation with whole green leaf duration. Rugulation ofnigtrogen take much more effect than soil moisture before planting on parameter of green leafarea. Green leaf area and duration time after heading play an important role to increase grainyield.
出处
《西北农业学报》
CSCD
1994年第1期3-8,共6页
Acta Agriculturae Boreali-occidentalis Sinica
关键词
小麦
绿叶面积
氮肥
底墒
Wheat
Green leaf area
Nitrogen
Soil moisture before planting
