甘肃中部引黄灌区枸杞施肥管理与土壤养分状况调查分析

Investigation and Analysis on the Fertilization Management and Soil Nutrients of Lycium barbarrum in Yellow River Irrigation Area of Central Gansu

通过对景泰县草窝滩镇枸杞幼龄园(1～4年生)和盛果期成龄园(5～8年生)施肥管理现状调查,并结合其20～40 cm土壤养分测试,分析目前该区枸杞养分管理中存在的问题及不同龄期枸杞园土壤养分特征。结果表明,该区枸杞养分管理中注重有机肥投入,但施用量不足;化肥施用中重氮素、磷素,轻钾素现象较为普遍。全量养分中有机质和全氮含量处于中等偏低水平,全磷处于极缺乏状态,全钾较为丰富,且幼龄园全钾含量高于成龄园。速效养分中幼龄园速效氮和速效磷含量明显偏低,成龄园的速效氮和速效磷含量属于中等水平。成龄枸杞园pH值低于幼龄枸杞园。

Based on investigation and analysis on the fertilization management and soil nutrients in the young（1～4 years old）and full fruit period（5～8 years old） of Lycium barbarrum in Caowotan town of Jingtai county,and soil nutrient testing of 20～40 cm,the study was conducted on the main problems and characteristic of soil nutrients in the different ages of Lycium barbarrum in this region.The results showed： the farmers paid attention to organic fertilizer,but the amount of application was less;and there was common phenomenon of emphasizing the application of N and P,but K of the chemical fertilizer application was neglected.The content of organic and total N was medium level or slightly lower,total P was very deficiency,total K was comparatively abundant,and the total K of young period orchard was more than full fruit period orchard.The content of available N and available P of young period orchard was lower,but the content of available N and available P of full fruit period orchard was medium level The pH of full fruit period orchard was lower than that of young period orchard.