养分库
In the rice-based multiple-cropping systems, the nutrient uptake of winter crops depended mainly on fertilization, whereas that of early-rice and late-rice derived primarily from the nutrient pool of soil, and hence the input of fertilizers must be guided by this feature of crop nutrition.
稻田多熟制中冬作物营养主要依赖肥料,而水稻的养分则主要源于土壤,必须根据此项特性指导施肥;
effects of long-term fertilization on soil nutrient pool
长期施肥对土壤养分库的影响
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