应用系统聚类方法将全省划分为3个玉米种植生态区及8个种植亚区。经5年多点试验,建立玉米产量函数模型24个,抉选出玉米定量栽培模式18个。经1985～1989年试验、示范及推广实践证明,将生态区划和模式化栽培有机结合,提高了模式的普适性和针对性,增产增收效果明显,为“八五”期间玉米生产上新台阶提供了技术保障。 The method of cluster analysis was used to divide the province into three maize planting ecotopes and eight planting sub-regions. After more than five years of experiments, the establishment of corn yield function model 24, select the corn quantitative cultivation mode 18. Experiments, demonstrations and popularization practices from 1985 to 1989 proved that organic combination of ecological zoning and modeled cultivation improved the universality and pertinence of the model, and the effect of increasing production and increasing income was obvious. It was a new stage for corn production during the Eighth Five-Year Plan period Provide technical support.