Abstract:

The climatic data was analyzed in seven typical stations where spring maize got high yield in one cropping zone in order to define the potential high yield zone. What’s more, the AEZ (agro-ecological zone) model was used to validate the distribution of high yield zone in the study area, it showed that about 49.25% planting area of spring maize could be up to the light and temperature standard in special soil condition, it contained 25.3% area which could be irrigated. The analysis of climatic data also showed about 53.56% of that could meet the high yield demand for spring maize. So it confirmed the feasibility of the analysis of climatic adaption for high yield zone distribution. In one cropping zone, the constraint factors for yield were heat quantity and water resources, meanwhile, the water factor restricted much more than former. The potential high yield zone was distributed mainly over Northeastern Plain, Hetao Plain, one cropping zone in Northern China Plain and Oasis irrigation area, which would be the highlight of high yield zone development.