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		长江中下游冬油菜产区有机无机肥配施下减氮增效潜力分析
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			Potential Analysis of Reducing Chemical Nitrogen Inputs While Increasing Efficiency by Organic-Inorganic Fertilization in Winter Rapeseed Producing Areas of the Middle and Lower Reaches of the Yangtze River
			 
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		 图2. 化肥氮可替代比例与土壤基本理化因子的关系  | 
	
Fig. 2. The relationships between the basic soil physio-chemical parameters and the substitutable proportion of chemical N fertilizer by organic fertilizer  | 
	
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