A MODEL OF GROWTH RESPONSES BY SPAR TINA ALTERNIFLORA TO NITROGEN LIMITATION
A MODEL OF GROWTH RESPONSES BY SPAR TINA ALTERNIFLORA TO NITROGEN LIMITATION
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互花米草生长对氮限制的响应模型
DOI：
10.2307/2259862
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发表时间：
1982
影响因子：
5.5
通讯作者：
J. Morris
中科院分区：
文献类型：
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作者：
J. Morris
SGR的时间变化在很大程度上取决于气候因素。虽然未观察到处理间SGR的显著差异，但总净干物质生产（？1 S.E.）在生长季内，其变化范围为10-1 ± 1.9 ~ 41.6 ± 7.2g株-1。(4)植物总产量的差异是由于光合：非光合组织，而不是SGR的变化的增长率的比率的差异。根/冠生产商的变化范围为0.35 ± 0.03（高供氮量）和0.93 ± 0.16（低供氮量）。地上生物量增长率/地下生物量增长率的商也表现出季节性变化。地上生物量的增长率最初是地下生物量的1.7-2.8倍，这取决于处理，而最终这一商数下降到小于10。虽然气生和根茎生产的刺激增加氮供应，总根生产没有显着差异处理。
that the temporal changes in SGR were largely dependent on climatic factors. Although significant differences between treatments in SGR were not observed, total net dry matter production (?1 S.E.) during the growing season ranged from 10-1 + 1.9 to 41 6 + 7.2 g plant-1. (4) Differences in total plant production were attributed to differences in the ratio of growth rate of photosynthetic :nonphotosynthetic tissue rather than to changes in SGR. Quotients of root/shoot production ranged between 0.35 + 0.03 at the high rate of supply to 0.93 + 0.16 at the lowest rate of nitrogen supply. The quotient of growth rate of aerial/growth rate of below-ground biomass also showed a seasonal pattern. The growth rate of aerial biomass was initially 1.7-2.8 times that of below-ground biomass, depending on the treatment, while eventually this quotient decreased to less than 1 0. Although aerial and rhizome production were stimulated by increased nitrogen supply, total root production did not differ significantly between treatments.