塑料连栋温室黄瓜生长温度数学模型的研究

为提高塑料连栋温室黄瓜的栽培水平，以能量平衡理论为分析平台，将温室中的空气温度拟合于栽培环境模型中，运用MATLAB程序模拟，并以试验验证模型。结果表明，该模型物理意义明确，便于数值模拟，且模拟结果与试验吻合好。就温室内5月份空气温度模拟而言，回归直线拟合度高，R2=0．8999，绝对误差在±0．85℃之内，平均相对误差9．1％。对回归方母=ax＋b，a与b的标准误差Sa=0．0352〈a／2，Sb=0．1053〈b／2。

Environment Mathematical Model of Cucumber Cultivation in Multi-Span Plastic Greenhouse

In order to achieve the sustainable development in multi-span plastic greenhouse with high efficiency, this research established the simulation model of the environment for cucumber production in coupling with the growing model, by utilizing the basic knowledge of the principle of energy balance as the theoretical research platform. The emulation was carried in MATLAB environment, tested and verified with actual experiments. As a result, the model was proofed with clear and definite significance in physics, being easy to emulate in digital, being identical with the date of the experiments. Taking the greenhouse air temperature model in May as an example, it wins a higher credit value with R2=0.8999, the absolute error is ± 0.85 ℃, the mean relative error is 9.1%, and the standard errors for the a and b are Sa=0.0352 〈 a/2, Sb=0.1033 〈b/2 for the regression equation ofy=ax＋b.