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虽然已经建立了多种形式的水分生产函数,但它们对相差悬殊的土壤和气候条件的可转换性仍是一个有争论的问题.本文对现行多种小麦水分蒸散生产函数在印度不同环境条件下的适用性和转换性进行了评价研究,研究中所使用的验证数据取自印度不同气候区的一些大田试验.依据输入数据的性质,这种函数可分为季节性函数和生育阶段性函数.每个函数对实际数据的适合性在统计学上是可信的.但是回归系数(即产量效应敏感性因子)值的大小即使是同一小麦品种也因试验地点的不同而有差异,这表明现行函数具有小地域性的特征.此外,还发现季节性函数产量效应敏感性因子也取决于小地区的气候和土壤异.
Although various forms of water production function have been established, they are still a controversial issue for the transferability of widely differing soil and climatic conditions.In this paper, the current production functions of multiple evapotranspiration in wheat under different environmental conditions in India The applicability and transformability of the study were evaluated using the validation data from several field trials in different climatic regions of India that can be divided into seasonal functions and growth stage functions based on the nature of the input data. The fitness of each function for the actual data is statistically credible, but the magnitude of the regression coefficient (ie, yield-effect sensitivity factor) value, even for the same wheat variety, varies from test site to test, indicating that current The function has a small regional character, and in addition, it is also found that the seasonal function of yield sensitivity also depends on the climatic and soil variability of small areas.