玉米是河南省安阳市主要粮食作物,常年种植面积达350余万亩(1亩=1/15 hm~2,下同)。而玉米的机械化播种面积仅1 60余万亩,占全市玉米种植面积的45%,远远低于周边地区的机械化播种水平。玉米种植大部分还采用传统的人工点种方式,劳动强度大、效率低且生产成本高。玉米人工点种株距、行距不规范,田间管理只能采用人工施肥方式,肥效利用率低:玉米机收由于不 Corn is the main food crop in Anyang City, Henan Province. The perennial planting area is more than 350,000 mu (1 mu = 1/15 hm ~ 2, the same below). The maize mechanized sown area only more than 1 600 acres, accounting for 45% of the city’s corn acreage, far below the level of mechanized planting in the surrounding areas. Most of the corn cultivation also adopts the traditional artificial point planting method, which has the advantages of labor intensity, low efficiency and high production cost. Corn artificial point of plant spacing, spacing is not standardized, field management can only use artificial fertilization, fertilizer efficiency is low: due to corn machine income