科研产出
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1Spatial variability of soil nutrients and influencing factors in a vegetable production area of Hebei Province in China
作者:
机构:
来源:NUTRIENT CYCLING IN AGROECOSYSTEMS
关键词: Fertilizer use GIS Soil nutrients Spatial variability Vegetable production area
2Evaluation of nutrient balance in soil-vegetable system using nutrient permissible surplus or deficit rate
作者:
机构:
来源:COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS
关键词: GIS nutrient balance nutrient practical surplus or deficit rate nutrient permissible surplus or deficit rate vegetable production system
年份:2007
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