Abstract:

Adding fertilizer biological activating agent of nitrogen fertilizer (referred to as N+), can improve the utilization rate of fertilizers, through the study of the N+ on soybean application effect, determine the optimal dosage and application methods, validation of fertilizer biological activating agent in nitrogenous fertilizer is able to exact to increase the utilization rate of fertilizer. The results showed that in this experiment condition, 1 hm2 applying nitrogenous fertilizer+ 85% 38.25 kg, 180 kg, 50% 75 kg ammonium potassium sulfate yield significant than CK 147.75 kg/hm2, increase rate was 4.12%.