Fertilizer Recommendation of Rubber Latex/Timber Clone Reken 525 Based on “3414” Field Experiments in Longjiang Farm
Fertilizer recommended rates were simulated by the models of three-factor,one-factor,liner and platform based on two year’s"3414" field experimental data of Reken 525 in Longjiang Farm.The results showed that the optimum fertilizer rate of three-factor model were N 0.135 7 kg/tree,P2O5 0.064 8 kg/tree and K2O 0.082 1 kg/tree.According to the characteristics of production trends,the optimum fertilizer rate of one-factor model were N 0.105 1 kg/tree,P2O5 0.106 0 kg/tree and K2O 0.103 9 kg/tree by comparing one-factor and liner and platform model.Some optimum fertilizer rate indicators of three-factor model were higher than one-factor model.Comprehensive consideration,the optimum fertilizer rate of Reken 525 initially identified as N 0.105 1~0.135 7 kg/tree,P2O50.064 8~0.106 0 kg/tree and K2O 0.082 1~0.103 9 kg/tree.