Evolution of the Early Rice Yield in China and its Prediction Methods

Vol.2, NO.4, 1991

Article Contents

Article Navigation > Journal of Applied Meteorological Science > 1991 > 2(4): 401-407

Evolution of the early rice yield in China and its prediction methods. J Appl Meteor Sci, 1991, 2(4): 401-407.

Citation:

Evolution of the early rice yield in China and its prediction methods. J Appl Meteor Sci, 1991, 2(4): 401-407.

Evolution of the early rice yield in China and its prediction methods. J Appl Meteor Sci, 1991, 2(4): 401-407.

Citation:

Evolution of the early rice yield in China and its prediction methods. J Appl Meteor Sci, 1991, 2(4): 401-407.

Abstract

Based on the data of yield and painting area of early rice from ten provinces of China, the spatial distribution and historical variation of rice production were analyzed. By using fuzzy classification method, the planting areas of ten provinces (city) can be divided into four parts. According to the harmonic analysis, the quasi-biennial fluctuation and its multiple periods were found; and the influences of temperature and precipitation on early rice yield were analyzed by use of regression integral method. During the period of experimental prediction operations from 1987 to 1990, the better results were obtained synthesizing the methods of the harmonic analysis, atmospheric model, temperature-precipitation model experts system.