Using the different ages rubber plantation as two research objects which were tapped rubber and young growth rubber in Hekou,Yunnan Province,the dynamic of soil fertility status was monitored for the long-term,and the change rule of soil fertility was studied to provide the basis for the rubber planting. Two sites were chosen to collect the soil samples in rubber forests,and measure its p H,organic matter,hydrolysis N,available P,available K and main soil fertility index of exchangeable calcium and magnesiu...
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