Soybean growth and yield response to elevated carbon dioxide
Soybean growth and yield response to elevated carbon dioxide
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大豆生长和产量对二氧化碳升高的反应
DOI：
10.1016/0167-8809(86)90098-8
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发表时间：
1986
期刊：
影响因子：
--
通讯作者：
Joy M. Smith
中科院分区：
文献类型：
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作者：
H. Rogers;J. Cure;Joy M. Smith
大豆（Glycine max L.）Merr.“吹牛”）种植在种子行在开顶田间室，并连续暴露于一系列升高的CO2浓度通过1982年和1983年的生长季节。1983年，还进行了水胁迫处理。营养生长与类似进行的盆栽实验的比较表明，叶面积的比例增加，总顶部干重的种子行植物，但一般类似的质量效应，CO2浓度升高。仔细记录的主茎叶出苗率和繁殖阶段没有一致的影响CO2在良好的浇水条件下，但在1983年有一个明显的修改高CO2水分胁迫诱导的生理成熟的时间加快。在1982年，以及在1983年的良好浇水的植物，站立的生物量在成熟时增加了显着的CO2浓度升高，但收获指数下降，产量是（统计）不受影响的治疗。目前CO2浓度的两倍，这些良好的浇水处理计算的产量响应分别为1.07和0.93。然而，在1983年的水分胁迫处理中，收获指数在CO2浓度升高的情况下没有下降，并且出现了非常显著的产量响应（700 μ l −1时为1.41）。
Soybeans (Glycine max L. Merr. ‘Bragg’) were grown in seeded rows in open-top field chambers and exposed continuously to a range of elevated CO2concentrations through-out the 1982 and 1983 growing seasons. During 1983, a water stress treatment was also imposed. Comparison of vegetative growth with a similarly conducted pot experiment showed an increased ration of leaf area to total top dry weight in the seeded row plants, but generally similar qualitative effects of elevated CO2. Careful recording of mainstem leaf emergence rates and reproduction stages showed no consistent effect of CO2under well watered conditions, but in 1983 there was a distinct modification by high CO2of the water stress-induced hastening of the time to physiological maturity. In 1982, and for the well watered plants in 1983, standing biomass at maturity was increased significantly by elevated CO2, but harvest index decreased and yield was (statistically) unaffected by the treatment. The yield responses calculated for a doubling of the current CO2concentrations for these well watered treatments were 1.07 and 0.93, respectively. In the water stress treatment in 1983, however, harvest index did not decrease in the presence of elevated CO2, and a highly significant yield response occurred (1.41 at 700 μll−1).