通过连续8年长期定位试验，研究了不同施肥方式对燕山山麓平原高产粮区褐土土壤肥力和作物产量的影响。
A 8 years long term experiment was conducted on the high yield area of plain at the foot of Yanshan mountain.
试验于2004 - 2005年在“国家土壤肥力与肥料效益长期效益监测基地(河南·郑州)”的长期肥料定位试验中进行。
The research was carried on platform of "China National Soil Fertility and Fertilizer Efficiency Long-term Monitoring Network Zhengzhou."
本试验于2002~2003 年在“国家褐潮土土壤肥力和肥料效益长期监测基地（BFSFFELTMB）”（北京昌平）进行。
Research was intiated from 2002 to 2003 in "Beijing Fluvo-acqic SoilFertility and Fertilizer Efficiency Long Term Monitoring Base(BFSFFELTMB, founded in 1990)".
本试验于2002~2003 年在“国家褐潮土土壤肥力和肥料效益长期监测基地（BFSFFELTMB）”（北京昌平）进行。
Research was intiated from 2002 to 2003 in "Beijing Fluvo-acqic SoilFertility and Fertilizer Efficiency Long Term Monitoring Base(BFSFFELTMB, founded in 1990)".
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