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探讨了麦玉两熟高产农田生态系统中化肥氮与有机肥之间的交互作用，并提出了安全合理的施Ｎ量．种植制度为冬小麦套种夏玉米，试验处理设氮肥（尿素）４个水平、有机肥（鸡粪）３个水平；采用了裂区试验设计，以有机肥为主区，氮肥为副区．结果表明在供试条件下，化肥氮与有机肥之间有显著的负交互作用；建议３００ｋｇ·ｈｍ－２作为供试条件下冬小麦套种夏玉米高产农田生态系统全年安全合理施Ｎ量
The interaction between chemical fertilizer nitrogen and organic manure in wheat-maize double cropping high yield farmland ecosystem was discussed, and a safe and reasonable application rate of N fertilizer was proposed. The planting system is winter wheat intercropping summer maize. There are 4 levels of nitrogen fertilizer (urea) and 3 levels of organic manure (chicken manure) in the experimental treatment. The experimental design of split zone is adopted. Organic fertilizer is the main area and nitrogen fertilizer is the subzone. The results showed that under the test conditions, there was a significant negative interaction between chemical fertilizer nitrogen and organic fertilizer. It was suggested that 300 kg · hm-2 could be used safely and rationally for winter wheat intercropping with high-yielding farmland ecosystem under test conditions