摘要
长期定位试验研究不同施肥措施对早地玉米土壤（NO3^--N）累积的影响结果表明，不同施肥和秸秆还田措施可不同程度造成0～500cm土层NO3^--N的累积，且对0～300cm土层NO3^--N的累积影响较大。秋施肥秸秆覆盖还田处理产量最高，且土壤NO3^--N累积量较低，所造成的环境风险也小，为我国北方半湿润偏旱区适宜施肥措施。
The effects of different fertilizer application countermeasures on the soil NO3^--N accumulation in dryland maize were studied by the long-term located experiments. The results show that the different fertilizer application countermeasures can cause the soil NO3^--N accumulation in 0 - 500cm soft body in some degrees and have more effect on 0-300cm soil layer. The treatment of autumn fertilization with stubble mulch return is a perfect pattern for obtaining higher yield of corn in the semi-damp and drought areas of North China, can lower the soil NO3^--N accumulation and cause smaller danger to the environment.
出处
《中国生态农业学报》
CAS
CSCD
2006年第1期122-124,共3页
Chinese Journal of Eco-Agriculture
基金
国家科技攻关项目(85-007-01-04
96-004-04-02
2001BA508B09)
国家高技术(863)发展计划项目(2002AAZZ4311-07)资助
关键词
旱地玉米
施肥措施
NO3^--N累积
Dryland maize, Fertilizer application countermeasures, Nitrate nitrogen accumulation
