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玉米作为禾谷类高光效高产作物,在我市多种在常有秋寒的山区和常有伏、秋干旱的丘岗旱地,自然灾害频繁,耕地相对瘠薄,投入水平偏低,技术改革滞缓,其高产性能未得到充分外现,一般亩产仅200～250公斤,只有个别农户小面积亩产500公斤以上。为了挖掘玉米增产潜力,近几年我市玉米主产区开展了高产攻关活动,小面积创纪录试验、百亩片亩产500公斤高产栽培示范和万亩高产技术开发均取得初步成效。1989年,山区、丘岗,春、夏玉米都出现了较大面积高产片,全市有24500多亩亩产过500公斤,其中3.4亩亩产达650公斤以上。 为了总结亩产稳定在500公斤以上的高产综合技术,在玉米成熟前,我们组织市、县玉
As a crop with high light efficiency and high yield of cereals, corn has many natural disasters in mountainous areas with frequent fall and autumn and dry hills and valleys, frequent natural disasters, relatively barren cultivated land, low input level and slow technological reform Its high-yielding performance has not been fully externalized. Generally only 200-250 kg of mu per mu is produced. Only an individual farmer has a mu yield of 500 kg or more per mu. In order to tap the yield potential of corn, in recent years, the main producing areas of corn in our city have carried out high-yielding research activities with a small area of record testing. The yield of 500 kilograms per mu per mu yielding high yield cultivation demonstration and mu high yielding technology development have achieved initial success. In 1989, mountainous area, hillock, spring and summer maize all showed a large area and high-yield film. There are over 24,500 mu mu yield in the city over 500 kilograms, of which 3.4 mu yield more than 650 kilograms. In order to summarize the high-yielding comprehensive technology with a stable yield of more than 500 kg per mu, before the corn matured, we organized the municipal and county jade