缓释肥对贵州黄壤地辣椒产量、品质及肥料利用率的影响.

[Objective] The purpose of this paper is to provide theoretical basis for efficient fertilization of pepper in yellow soil region of Guizhou province. [Method] Field test method was used to test the application of three slow-release fertilizers(stable fertilizer, nitro dualeffect fertilizer and controlled-release fertilizer) on pepper in the typical yellow soil area of Guizhou province, and to study their effects on yield, quality, nutrient absorption and fertilizer utilization of pepper. [Result]The yield of pepper increased by 14. 3 %-19. 4 % after applying three slow-release fertilizers, which was significantly higher than that of conventional fertilization and no fertilization. The amino acid content of pepper was 8. 9 %-22. 7 % higher than that of conventional fertilizer, and the crude protein content was 2. 4 %-10 % higher. The nutrient contents of pepper leaves, stems and fruits were improved as well as the agronomic efficiency, partial nitrogen productivity and apparent nitrogen utilization rate of pepper. [Conclusion] The application of three slow-release fertilizers significantly increased the yield of pepper, improved the quality of pepper and increased the fertilizer utilization rate of pepper. [ABSTRACT FROM AUTHOR]