STUDIES ON THE NATURAL RESOURCES AND THE ESTABL- ISH1NG OF NATIONAL CROP COMMODITY BASE IN HUANG-HUAI-HAI REGION
试论黄淮海地区的自然资源及国家级作物商品基地的建设

Based on the natural and social economic conditions of main agricultural region in China-Huang-Huai-Hai region (HHH) and the analysis of the climate-soil ecological adaptation of main four crops (wheat, corn, soybean, cotton),the potential commodity amount of the four crops are calculated using the method of graded estimating the productivity. It has been proved possible to establish national commodity base in stretches in this region.