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山西省玉米常年播种面积1,000万亩左右,约占粮田面积的20％。总产仅次于小麦,单产则居第一位。占玉米总面积70％左右的旱地玉米,在很大程度上左右着全省玉米的产量。为了进一步挖掘旱地玉米的增产潜力,我们于1981—1984年,连续对全省旱地玉米的地理分布、各玉米区的自然条件、土壤特点、抗旱耕作栽培技术、高产经验及存在问题进行了广泛考察。
Shanxi perennial planting area of about 1,000 acres of corn, accounting for about 20% of the area of grain. Total output second only to wheat, yield is the first place. About 70% of the total area of maize dry corn, largely affecting the province’s corn production. In order to further explore the yield potential of dryland maize, we conducted an extensive survey of the geographical distribution of dryland maize, natural conditions, soil characteristics, drought-resistant cultivation and cultivation techniques, high-yielding experiences and existing problems in the whole province from 1981 to 1984 .