JING Guo-chen,LIU Xu-jun,REN Xian-ping.Influence of Soil Erosion on Soil Properties of Black Soil Bank Farming[J].Research of Soil and Water Conservation,2008,15(06):28-31.
黑土坡耕地土壤侵蚀对土壤性状的影响
- Title:
- Influence of Soil Erosion on Soil Properties of Black Soil Bank Farming
- Keywords:
- black soil; soil erosion; physical and chemical properties
- 分类号:
- S157.1
- 摘要:
- 黑土作为东北地区主要的耕作土壤，其结构性状对土地生产力影响极大。土壤侵蚀使肥沃的黑土层减薄，土壤理化性状不同程度地受到破坏和影响。根据黑土侵蚀现状，对不同侵蚀程度黑土坡耕地的养分状况、土壤田间持水量和渗透速度、抗蚀抗冲性能指标的测定分析发现，黑土侵蚀程度由轻度到重度，土壤有机质等养分含量越来越低；土壤蓄渗水能力逐渐减小；土壤抗蚀抗冲性能亦逐渐降低。黑土坡耕地土壤侵蚀程度的加剧，使得土壤有机质含量减少，保肥供肥能力降低，土壤黏度加重，结构变劣，保水能力减弱，影响农作物的生长发育，势必对我国东北黑土区商品粮基地的重要地位构成严重威胁。
- Abstract:
- The black soils is the main farming soil in northeast China,the influence of its structure and character on soil productivity is prodigious.The fertile black soil is becoming thinner and thinner because of soil erosion,the physicochemical characters of soil are destroyed and affected in varying degrees.According to the actuality of soil erosion,the determination and analysis which includes the slope farmland nutrient condition of black soils in varying erosion degrees and the field moisture capacity and infiltration velocity,as well as the index of against corrosion and impact resistant show: with the aggravation of the black soil erosion degree,the soil organic content and the against corrosion and impact resistant of soil will become lower and lower,at the same time,the storage and seepage capacity of soil will minish gradually.The aggravation of soil erosion degree in the the black soil slope farmland result in that soil organic content decreases,the capacities of preservation and supply fertilizer reduces,the soil viscosity increase and the structure becomes inferior,water retaining capacity lower,making an impact on the growth of crops,which certainly will compose the grave threat to the important status of commodity grain base of the black soil region of northeast China.
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备注/Memo
收稿日期:2008-4-14;
基金项目:黑龙江省科技攻关项目（GB06C203）
作者简介:景国臣（1964- ），男，高级工程师，主要从事水土保持生态建设与冻融侵蚀研究。E-mail：jgc031@163.com