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1 玉米高产是一个永恒的课题中国是世界第二大玉米生产国,经历几代科学家的辛勤努力,玉米生产有了快速发展。上个世纪90年代,玉米种植面积在3．5～3．8亿亩,平均亩产最高达到了350kg,在适宜的气候和栽培条件下,大面积亩产500～600kg,高产纪录超过1000kg／亩,玉米生产达到历史上的最好水平。
1 High yield of corn is an eternal topic China is the second largest producer of corn in the world. With the hard work of several generations of scientists, corn production has seen rapid development. 90s of last century, corn acreage of 3.5 to 3.8 million mu, the average yield of up to 350kg per mu, under the appropriate climate and cultivation conditions, large-area yield 500 ~ 600kg, high-yield record of more than 1000kg / Mu, corn production reached the best level in history.