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jensen模型
    Application & Solution of Jensen Model In Unsufficient Irrigation Schedule
    非充分灌溉制度制定过程中Jensen模型的求解与应用
    New definition and computation on the water sensitive index in Jensen model
    Jensen模型水分敏感指数的新定义及其解法
    Determination Method for Relational Parameter in Jensen Model of Water Production Function in Different Years
    作物水分生产函数Jensen模型中有关参数在年际间确定方法
    Jensen model and ANN model for water-fertilizer production function of winter wheat
    冬小麦水肥生产函数的Jensen模型和人工神经网络模型及其应用
    Study of Linear Imitation for the Accumulated Function of the Sensitive Index in the Rice's Jensen model
    水稻的Jensen模型中敏感指数累积函数拟合公式的线性化研究
    This paper introduces Gauss-Newton method and uses it to calculate the parameters of Jensen model of crop water production function.
    介绍了高斯 牛顿法,并把它用于作物水分生产函数Jensen模型参数求解,该方法可使拟合结果逼近无偏估计,从而提高拟合的精度。
    Year-to-Year Variations of Sensitivity Index in Jensen Model for Winter Wheat in Eastern Area Plain of Henan Province
    豫东平原冬小麦Jensen模型中敏感指数的年际变化
    Based on Jensen model, two-dimension dynamic programming was taken to make an optimum irrigation schedule of winter wheat. Water was irrigated in the most sensitive phase of crop to water, and the water use efficiency was improved.
    并在Jensen模型基础上,采用二维动态规划原理,制定出冬小麦优化灌溉制度,在作物水分亏缺最敏感的时期进行限水灌溉,提高水分利用效率。
    As to the other factors, thesis carries on empirical tests. Using Jensen model, H-M model, T-M model to come back, get corresponding T test and P value.
    对于基金的择时、择券、及风险贡献三个因素,论文进行实证分析,运用Jensen模型、H-M模型、T-M模型进行回归,得到相应的T检验及P值。
    to silage corn, Jensen model disclosure the numerical relation between yield and water, the most sensitive stage to water is from jointing stage to heading stage.
    对于青贮玉米,Jensen 模型能较好地揭示其产量和水分之间的数量关系,拔节-抽穗期对水分最为敏感。
    The wheat water product function of Heilong-gang area was simulated by Jensen model, Minhas model, Blank model, Stewart model. The result showed that Jensen model was optimal in Heilonggang area.
    本文应用冬小麦的不同灌水处理下的耗水量计算结果及对应的籽粒产量的试验资料,用Jensen模型、Minhas模型、Blank模型、Stewart模型分别对黑龙港地区冬小麦的水分生产函数进行了拟合并对得出的模型求解结果进行了比较分析,结果表明,黑龙港地区小麦水分生产函数用Jensen模型拟合效果最佳。
    On the base of analysing the function of water -crop yield and through experiments,the anthor of this paper has revised the Jensen Model and presented the function of water -environment-crop yield suitable for this experiment region. And a model of predicting the water insufficient sensitivity coeffcient has been setup.
    本文在对作物水分生产函数分析的基础上,通过试验对Jensen模型进行了修正,提出了适合研究区的作物水分环境生产函数,同时,建立了缺水敏感指数ε_i预报模型
    Based on common by used crop water production function models, such as Doorenbos model, Jensen Model and Blank Model, equations used to estimate all types of SI are derived.
    以Doorebos模型、Jensen模型和Blank模型等常见作物水分生产函数模型为基础,导出了各种敏感性指标的计算公式。
    According to the experimental results and Jensen model, a water productive function of tomato has been simulated.
    同时对番茄不同时期水分胁迫对产量的影响进行了深入研究,并根据试验研究结果,应用Jensen模型拟合了番茄水分生产函数。
    Introduction and improvement of Jensen model improved non full irrigation research in China from qualitative stage to quantitative stage.
    Jensen模型在国内应用使非充分灌溉研究从定性阶段提高到定量阶段。
    Thought and process of establishing irrigation schedule by Jensen model are discussed in the paper, Jensen model is built and solved by two-dimension dynamic programming, and relevant software is developed for establishing irrigation schedule, which output is satisfied comparing with experimental data. It is a reference for agricultural irrigation.
    探讨了利用 Jensen模型制定非充分灌溉制度的建模思路 ,给出了 Jensen模型的二维动态规划求解方法 ,并研制了二维非充分灌溉制度的程序 ,其结果与实验相吻合 ,可用于指导农业灌溉和生产。
    Combining crop water production function model in whole growing season and different phase, this paper presented determination method for relational parameter in Jensen model of crop water production function in different years. The example calculation result shows that this method has low error and can be used in non-sufficient irrigation research .
    将作物全生育期水分生产函数模型和分阶段水分生产函数模型结合起来应用,提出了作物水分生产函数Jensen模型中有关参数在年际间确定方法,并采用豫东开封惠北灌溉试验站资料进行了实例计算,结果表明,该计算方法误差小,可在非充分灌溉研究中运用。
    The Jensen model of winter wheat yield water consumption was established by using two years experimental data. The model showed that the value of λ i significantly increased after stem elongation and reached the maximum at heading. This indicated that it was irrigation key stage of winter wheat after stem elongation,the heading was the most critical moment of irrigation.
    在西北半干旱区甘肃省定西农业试验站 ,经过两年冬小麦种植试验 ,建立了冬小麦产量 -耗水量 Jensen模型 ,该模型表明拔节期以后 ,λi 值明显增大 ,至抽穗期达最大 ,这说明从拔节期开始 ,该地冬小麦进入灌溉关键期 ,抽穗期是灌溉的最关键时期 .
    This paper uses statistics to analyze water resources,and makes use of the Jensen model to establish short water's affect method towards the farm crop's yield.
    运用统计分析水源,利用Jensen模型表达缺水对作物产量的影响。
    According to the winter wheat experiment on 1991-1993 in Wangdutest station, establish winter wheat moisture production function using Jensen model(g) find the solution of sensitivity coefficient on winter wheat, build the 2 dimension dynamic operation program(g) the irrigation system of winter wheat has determined.
    根据望都试验站1991~1993两年的冬小麦试验资料,利用Jensen模型,建立冬小麦水分生产函数,求解出冬小麦作物敏感系数,编制二维动态规划程序,确定出冬小麦的灌溉制度。
 

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