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本文研究了试验范围内不同生态条件下,二棱大麦早熟3号、矮早3号两个品种中部及端部耔粒干重增重快增期的数学模型(y:克/千粒:x:距抽穗日数)。发现同一品种、相同粒位、不同播期间有共同的回归系数(即干重增重强度),b_ES=1.48,b_EW=1.22,b_ds=1.25,b_dw=0.99;同一品种、相同粒位、不同播期间的回归高度差异显著,其实质是播期间滞增期长短确有不同的反映,可利用此回归高度作为确定适宜播种期的一个指标:在快增期,中部籽粒比端部籽粒确有较大的干重增重强度,这是提高平均粒重的潜力所在。为早熟3号,矮早3号建立了中、端部粒位快增期干重增重的数学模型,共16个线性回归方程;讨论了提高粒重的潜力和途径。
In this paper, we studied the mathematical model (y: g / 1000 grains: x (subscript x)) of rapid growth and weight doubling at middle and end of two cultivars of two rows of barley, : From the heading date). B_ES = 1.48, b_EW = 1.22, b_ds = 1.25, b_dw = 0.99; The same variety, the same grain, different sowing time During the period of return height difference is significant, the essence is the sowing period of lag period does have different reflects the height of the regression can be used as an indicator to determine the appropriate sowing period: in the fast growing period, the middle grain than the end of the grain does have more Large dry weight gain strength, which is to increase the average weight of the grain lies. A mathematical model was established for early dry weight gain of midgut and midgut for early maturity No.3 and short morning rung 3, and a total of 16 linear regression equations were established. The potential and ways to increase grain weight were discussed.