中、低产田玉米良种繁殖中平衡施肥试验

针对大同地区玉米种子繁育生产中存在的施肥技术问题，进行了此项研究。结果表明，稳氮增磷，能显著提高玉米种子的产量，亩施磷量10．53kg，种子亩产高达340．83kg，亩经济效益比传统施肥增加3倍以上；中、低水肥地补施锌肥，具有明显的增产增效和提高种子质量的作用。

Primary Study on the Reproduction of Maize Variety Suitable to Medium-lower Field

In order to increase yield of the improved maize variety suitable to medium-lower field in Datong region, a field test on fertility was fulfilled. The treatment with 10. 5kg. mu-1P2O5 gained 340. 8kg. mu-1 maize yield, and the economic bent fit was 4 times as many as the traditional treatment. The treatmeat with Zn in irrigated field resulted in high yield, qualitied seeds and more interest.