natural soil fertility

基本解釋

Natural fertility of soil is the gradual product of natural and historical process.
土地自然肥力是自然歷史過程的産物；
As the management term of pure bamboo stands prolonged the natural soil fertility declined, which resulted from the growth characteristics of pure bamboo forest and the management methods.
毛竹純林隨經(jīng)營期的延長，其土壤的自然肥力呈下降趨勢，這是毛竹純林的生長特性和經(jīng)營方式?jīng)Q定的。
Natural soil fertility is dropping in many areas because of continuous industrial fertilizer and pesticide use, while the growth of algae is increasing in lakes because of the fertilizer run-off.
在很多地區(qū)，由於工業(yè)化肥和辳葯的持續(xù)使用，導致自然土壤的肥力正在下降，然而化肥的流入?yún)s導致湖泊中藻類生長地越來越快。
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