Acta Geographica Sinica ›› 1950, Vol. 17 ›› Issue (1): 1-22.doi: 10.11821/xb195001001
In the last decade, growing attention has been paid to the study of crop productivity which has an important bearing on the areal differentiation of agricultural landscape稦our kinds of coefficients have been devised to measure the productivity, i.e. the productivity coefficient, the ranking coefficient, the money value coefficient and the energy cofficient. It has been shown else-where that the money value coefficient is a more useful and more direct indi-cator of crop productivity, and economic units correspond rather closely with nutritive units. In the present study, both money value coefficient and energy coefficient have been calculated so that the results may be compared.
Mei-Ngo Jen. The Geographical Distribution of Crop Productivity In Szechuan Province, China[J].Acta Geographica Sinica, 1950, 17(1): 1-22.
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