Abstract:
The yields of wheat and corn of various townships in Beijing suburban districts are divided by experimental orthogonal function analysis into two parts, the space component and the time coefficient. The environmental and economic factors affecting the space component and the time coefficient are sieved by stepwise regression, and factor structure models are established. Some problems in the grain production system are noticed through model analysis and a strategy is suggested to deal with them.
Key words:
grain yield field,
Experimental orthogonal function analysis
Deng Genyun Wang Weimin Cao ZengyunLi Jian Yuan Dakun Ouyang Hong. THE EXPERIMENTAL ORTHOGONAL FUNCTON ANALYSIS OF GRAIN YIELD FIELDS——THE RELATION BETWEEN THE TIME-SPACE CHARACTERS OF GRAIN YIELDS AND ENVIRONMENTAL-ECONOMIC FACTORS[J]. ACTA AGRICULTURAE BOREALI-SINICA, 1987, 2(2): 8-18. doi: 10.3321/j.issn:1000-7091.1987.02.002.