基于生物量的冬小麦越冬前植株地上部形态结构模型

越冬前植株地上部形态建成是冬小麦株型构建和可视化的重要基础。为定量分析冬小麦越冬前植株地上部形态结构参数与器官生物量的关系,以济麦22、泰农18和鲁原502为材料,于2013—2014和2014—2015年度开展品种和施氮试验。利用2013—2014年度越冬前植株地上部形态结构参数和器官生物量等数据构建了冬小麦越冬前植株地上部形态结构模型。经2014—2015年度数据检验,除叶鞘长和叶弦长模型精度略低外,叶长、最大叶宽、叶切角和叶弦角模型精度均较高,所建模型可较好地模拟不同品种与各施氮水平冬小麦越冬前植株地上部形态结构。

Aboveground Architecture ModelBased onBiomass of Winter Wheat before Overwintering

The aboveground morphogenesis is an important basis of plant morphological construction andvisualization for winter wheat before overwintering. For quantitatively analyzing the relationship between the aboveground architectural parameters and organ biomass of winter wheat before overwintering, field experiments with different varieties (Jimai 22, Tainong 18, and Luyuan 502) and nitrogen levels were carried out in 2013–2014 and 2014–2015 wheat growth seasons. Simulation models for aboveground architectural of winter wheat before overwintering were built with the 2013–2014 dataset of aboveground architectural parameters before overwintering and organ biomass and validated by the2014–2015dataset, showing the models exhibited satisfactory predictions for leaf blade length, leaf maximum blade width, leaf blade tangent angle, and leaf blade bowstring angle, except for leaf sheath length and leaf bowstring length. The models built in this study are suitable to simulate the aboveground architecture of winter wheat varieties before overwinteringunder different nitrogen levels.