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为探讨喀斯特山地土地整理后有效的土壤培肥模式,揭示不同粒级组分中养分含量的分布,以贵州省普定县陈家村进行土地整理后的坡地为例,进行小区施肥种植试验,研究不同施肥方式对整理后岩溶土壤养分培肥的影响。结果发现,各培肥模式中,施用农家肥、深松、使用本地蚯蚓对土壤有机质、全氮的改善效果较好,施用农家肥+尿素+过磷酸钙+氯化钾对增加土壤磷、钾养分的效果较好。同时发现0.002~0.02mm粒级组分中有机质和养分含量普遍高于其他粒级。
In order to explore the soil fertility mode after land consolidation in Karst mountains and to reveal the distribution of nutrients in different grain fractions, a case study of the fertilization in a small plot was carried out using the slope lands after land consolidation in Chenjiacun, Puding County, Guizhou Province as an example Effect of Different Fertilization Modes on Nutrient and Fertility of Finished Karst Soil. The results showed that the application of peasant manure, subsoiling and local earthworm improved the soil organic matter and total nitrogen better in all fertilization modes. The application of peasant manure + urea + superphosphate + potassium chloride increased soil phosphorus and potassium Nutrient effect is better. At the same time, it was found that the organic matter and nutrient contents in the fractions of 0.002-0.02mm were generally higher than those of other fractions.