破解大面积旱地玉米增产难题是山西省粮食安全的重要保障

玉米生产在山西农业生产和国民经济中占有十分重要的地位。但多年来山西省玉米单产一直徘徊在5 250 kg/hm2的较低水平,尤其大面积旱地。在充分借鉴国内外高产典型经验的基础上,提出了"以增密为核心的各种技术集成配套"的观点,通过全省多年多点的试验研究,创新集成了不同生态类型区的高产模式,初步建立起了玉米抗旱高产技术体系,并在各玉米产区布点示范,取得了较大面积旱地玉米公顷产量超15 000 kg的高产记录,该技术成果对实现山西省玉米丰产增粮计划、促进粮食安全具有重大意义。

An Important Guarantee of Food Safety in Shanxi to Conquer the Difficulty for Maize Yield Improvement in Large Scale Dryland

Though maize production is of great importance to agricultural production and national economy in Shanxi, maize unit output kept at a relatively low level of 5 250 kg/hm^2, especially in large scale dryland, for many years. Based on advanced experience learned from foreign countries and from China, a standpoint of technology package focused on density increase has been put forward and through experiments for years at multiple spots in Shanxi, high yield models for various ecological areas and a high yield drought resistant technology system has been set up. In addition, high yield record over 15 000 kg/hm^2 in a relatively large area has been got during technology extension over the whole province. The technology is of great significance to relize the provincial maize harvesting plan and to promote food safety in Shanxi.