Abstract:

In order to do that ‘Bidan17’ was high yield at high altitudes, using the second order regression current rotation design, the experiment was conducted with ‘Bidan17’ to study the effect of density and the cooperative relation among N, P and K. The mathematical model was established and the best cultivation scheme was gained. The results showed that: at high altitudes the cultivation scheme of ‘Bidan17’ yield more than 9850.00 kg/hm2 was that: density 65805-70620 plant per hm2, N 449.85-485.1 kg/hm2, P2O5 273.75-326.25 kg/hm2, K2O 224.64-323.85 kg/hm2,and the sequence was N > P2O5 > K2O of influence on the yield ,and N has certain complementation with K2O.