dual effect 第1页

N and P balances in farmland ecosystem and their response to fertilizers Effect of topdressing nitrogen of intercropped maize strip on intercropped crop yields and soil nitrate nitrogen as well as its residual effect Dual effect of fruit tree cultivation on soil physical characteristics The Dual Effect of the Giant Panda Edible Bamboo and Prevention Countermeasures EFFICIENCY OF NITROGEN IN NP COMPOUND ( MIXED ) FERTILIZERS Residual effect of phosphorus fertilizer and phosphorus recycling in a farming system Ⅰ Phosphorus uptake by crops, residual effect of phosphorus fertilizer and changes of soil available phosphorus