Δ GR / Δ NaCl means a decreased value in plant growth rate per unit of increased NaCl concentration, which can present plant salt tolerance : the more strong salt tolerance of plant was, the lower the ratio of Δ GR / Δ NaCl was. ΔGR/ΔNaCl(每提高单位NaCl浓度时植株生长速率的下降值)可以代表植物的耐盐性,植物耐盐性越强该比值越小。
Taking the relationship between slope value and yeild as a standard, the slope variation is divided into three regions to show the effect of competition intensity on individual plant growth and per unit yeild. 以斜率的数值与产量关系为标准,把斜率的变化分成3个区域,以表示竞争强度对个体生长和单位面积产量的不同作用。
The dissertation developed a parallel simulation model based on the mechanism of feedback between plant morphological architecture and eco-physiological function, the time interval of which is growth cycle ( GC ) and the architectural unit of which is metamer. 本文基于植物的结构与功能反馈机制,以生长周期GC为时间步长,叶元为结构单元,建立了玉米生长的生理生态功能与形态结构的并行模拟模型。