石家庄地区耕地土壤有机质含量时空变异特征及提升对策

石家庄自2005年开始实施测土配方施肥技术项目，在该项目实施过程中测定了大量的土壤样本。通过对土样有机质化验数据进行分析，研究了石家庄地区耕地土壤有机质含量时空变异特征。结果表明：从时间上看，近30a来石家庄地区耕地有机质含量呈逐步上升趋势，其中中西部增长迅速、东部增长缓慢；从空间上看，中南部（高邑、栾城等）褐土类耕地有机质含量较高，东部（晋州、辛集）潮土类耕地有机质含量较低，西部和北部山区丘陵地耕地有机质含量居中；粮食高产县（市、区）耕地有机质含量较中低产县（市、区）耕地有机质含量高。通过分析耕地土壤有机质时空变异规律及影响因素，提出了今后石家庄地区耕地有机质提升的对策和建议。

Temporal-spatial Variability Characters of Cultivated Soil Organic Matter Content and Promotion Countermeasures in Shijiazhuang

The temporal-spatial variability characters of cultivated soil organic matter content were studied. The results showed that the cultivated soil organic matter content was gradually increasing in Shijiazhuang in recent 30 years, and that in midwest increased rapidly, while that in east increased slowly. The organic matter content in the cinnamon soil in central south was higher north was at the middle. that in the counties with , that in the alluvial soil in east was lower, and that in the mountain area and hilly in west and The cultivated soil organic matter content in the counties with high yield of grain was higher the middle and low yield. The countermeasures and suggestions of increasing the cultivated than soilorganic matter content were given.