Study on simulation of "3414" fertilizer experiments
Sheng Wang · Plant Nutrition and Fertilizing Science · 2002
This paper studied the effects of different fertilizer models on simulation for the3414 fertilizer experiments, which were conducted from 1995 to 1998 in Tangshan City in Hebei Province, sponsored by UNDP (United Nations Development Program) The results showed that,the success ratio of simulation by threefactor and onefactor model was 56% and 100%, respectively; the recommended fertilizer amount by threefactor model simulation was higher than that by onefactor model simulation in the same '3414' experiment; and the ratio of the experiments without N, P2O5 and K2O recommended by onefactor model simulation was 15%, 44% and 67% , respectively But by the threefactor model simulation, such information was not available So, in '3414' fertilizer experiment, the onefactor model was a supplement and an optimization for the threefactor model