黑河中游内陆沼泽退化湿地种草技术改良盐渍化土壤的效果研究  

Effect of Grass Planting Technology on Soil Improvement in Inland Degraded Saline Wetland in the Middle Reaches of Heihe River

作　　者：任璞 REN Pu(Ganzhou District Heihe Wetland National Nature Reserve Administration,Gansu Ganzhou 734000)

机构地区：[1]甘州区黑河湿地国家级自然保护区管理局,甘肃甘州734000

出　　处：《林业科技》2022年第3期28-30,46,共4页Forestry Science & Technology

摘　　要：在黑河中游内陆退化湿地的盐渍化土壤上选择紫花苜蓿、冰草、黑麦草开展种草试验,比较其在土壤改良上的效果。结果表明,生草措施较未生草的对照处理在增加植被、改土培肥方面均有显著的效果,使地上生物量增加、植被盖度增加,改善土壤的容重、总孔隙度及含水量等物理指标,在降低土壤中含盐量的同时提高了土壤中有机质、水解氮、速效磷、速效钾等化学养分指标。建议在生产中选择3种草进行混合播种。Alfalfa,wheatgrass and ryegrass were selected to plant grass on the inland degraded saline wetland in the middle reaches of Heihe River,and their effects on soil improvement were compared.The results showed that compared with the control treatment without grass,the grass growing measures had significant effects on increasing vegetation and improving soil fertility,to increase aboveground biomass and vegetation coverage,and improve physical indicators such as soil bulk density,total porosity and water content.While reducing the salt content in the soil,the indexes of organic matter,hydrolyzed nitrogen,available phosphorus,available potassium and other chemical nutrients in the soil were improved.It is suggested to select 3 kinds of grass for mixed sowing in production.

关 键 词：黑河中游 内陆退化湿地 种草 盐渍化 改良土壤 

分 类 号：S714.6[农业科学—林学]