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通过田间试验,对冬小麦叶面积、比叶面积(SLA)及黄叶率(DR)予以描述和定量化,冬小麦冬后比叶面积与相对生育期(RDS)的对数呈线性递减关系,SLA=-21.07×1n(RDS)+19.427,最大和最小比叶面积分别为40m~2/kg和19m~2/kg。小麦黄叶率在冬后与相对生育期呈抛物线关系,可用下式表示DR=2.142×RDS~2-1.8001×RDS+0.6571,这为冬小麦生长模型中的叶面积模拟提供了新的方法和理论依据。
Through field experiments, the leaf area, specific leaf area (SLA) and yellow leaf rate (DR) of winter wheat were described and quantified. The logarithm of specific leaf area and relative growth period (RDS) = -21.07 × 1n (RDS) +19.427, the maximum and minimum specific leaf area were 40m ~ 2 / kg and 19m ~ 2 / kg, respectively. The yellow leaf rate of wheat shows a parabola relationship with relative growth period after winter, which can be expressed as DR = 2.142 × RDS ~ 2-1.8001 × RDS + 0.6571, which provides a new method and theory for leaf area simulation in winter wheat growth model in accordance with.