| Abstract: In order to provide reasonable fertilization parameters for production of red pepper in Tongliao
city, a multi-point dispersion field experiment was conducted which set up 11 treatments of combined application of
organic and chemical fertilizers, with no fertilizer, only organic fertilizer and conventional fertilization as the control.
The yield, economic benefit, nutrient absorption of red pepper, contribution rate of soil or fertilizers, the increase rate
of yield, utilization rate and fertilizer benefits of N, P2O5, K2O were compared and analyzed. The results showed that
the contribution rate of soil fertility was 67.85%, that of fertilizer was 25.06%-27.82%, and that of organic fertilizer was 4.33%-7.09%. The average fertilizer utilization rate was 47.51% of N, 18.69% of P2O5 and 46.98% of K2O. The
correction coefficients of soil N, P2O5, K2O were 0.65, 1.40, 0.73, respectively. The increase rates of N, P2O5, K2O and
organic fertilizer were 11.07%-32.52%, 0.37%-11.81%, 8.34%-20.63%, 6.38%-7.63%, respectively. The yield increased
by N, P2O5, K2O and organic fertilizer were 4.50-9.67, 0.35-5.56, 2.77-8.99 and 0.01 kg/kg, respectively. In the practice of
fertilizer reducing and efficiency increasing in Tongliao city, the order of the effect of different type fertilizer on the yield of
red pepper was nitrogen > potassium > phosphorus > organic fertilizer under the condition of combined application of organic
and chemical fertilizers. The application amount per 667 m2
of N, P2O5, K2O（10, 7.50, 7.50 kg, respectively） in the optimal
fertilization proportion（N2P2K2+M） was 35.0, 7.5, 13.5 kg which less than that in the conventional fertilization, respectively,
and the yield increased by 21.97 kg, the effect of fertilizer reducing and efficiency increasing was better. |