华北土石山区不同肥料对土壤养分的影响

The Influence of Different Fertilizers on the Soil Nutrition in Rocky Mountain Area of Northern China

河北平山土石山区片麻岩及花岗岩山地土壤土层瘠薄,土壤保水能力差,且灌溉困难。水、肥的严重匮乏是该地区植被恢复的限制性因子。与化肥相比,施用3种新型肥料(生物有机肥、缓释复混肥、微生物菌剂),均能显著提高土壤全氮、全钾、有机质、碱解氮、速效钾含量。尤以生物有机肥2000g/穴处理施用效果最好,土壤全磷、全钾、有机质、碱解氮和速效磷较CK分别提高了444%、87%、906%、355%、1131%,土壤养分均得到最大程度的改善。因此,平山地区可以利用有机肥提高土壤肥力以促进植物生长,加速植被恢复的速度。

In the typical Soil-gravel Area in pingshan County of Hebei Province,it has thinner layer and more poor soil water-retention capacity and difficulties in irrigation for gneiss and granite mountain soil.Seriously lack of water and fertilizer is the vegetation recover restrictive factor of this area.Comparing with fertilizers,three new fertilizers （bio-organic fertilizer,slow-release fertilizer,microbial agents） were superior to chemical fertilizers on the improvement of soil chemical properties,can significantly increase soil total nitrogen,total potassium,organic matter,nitrogen,available potassium content.With the treatment of bio-organic fertilizer 2000 g/socket,soil total phosphorus,total potassium,organic matter,nitrogen and available phosphorus increased by 444%,87%,906%,355%,1131% than CK,the nutritions of soil have been improved greatly.So bio-organic fertilizer can be utilized to improve the nutritions,which promotes plants to grow and accelerate plants to renew.