Cavazzoni J, Volk T, Stutte G
Department of Biology, New York University 10003, USA.
Life Support Biosph Sci. 1997;4(1-2):43-8.
The CROPGRO crop growth model is adapted in order to analyze experimental data from a soybean (cv. Hoyt) experiment conducted at elevated CO2 levels (1200 micromol mol-1) at Kennedy Space Center, FL. The following adaptations to original CROPGRO produced model agreement with gas-exchange data: the input of square-wave temperature and photosynthetically active radiation (PAR) profiles; the input of the appropriate hydroponic substrate PAR albedo; modified biomass partitioning and developmental parameters; an increased leaf area expansion rate through the fifth vegetative node; a decreased specific leaf area after the fifth vegetative node; and an increased incident diffuse PAR fraction over typical field values. The model demonstrated here suggests that with continued development, modified CROPGRO will be a useful tool in the analysis and eventual optimization of legume production in bioregenerative life support systems.
对CROPGRO作物生长模型进行了调整，以分析在佛罗里达州肯尼迪航天中心二氧化碳浓度升高（1200微摩尔/摩尔）条件下进行的大豆（品种Hoyt）实验的实验数据。对原始CROPGRO模型进行了以下调整，使其与气体交换数据达成一致：输入方波温度和光合有效辐射（PAR）曲线；输入合适的水培基质PAR反照率；修改生物量分配和发育参数；提高通过第五个营养节的叶面积扩展速率；降低第五个营养节之后的比叶面积；以及提高入射漫射PAR分数使其超过典型田间值。此处展示的模型表明，随着不断发展，经过修改的CROPGRO将成为分析和最终优化生物再生生命支持系统中豆类生产的有用工具。
