成都市草坪绿地土壤肥力质量评价  

Evaluation on Soil Fertility Quality of Green Space on Lawn in Chengdu City

作　　者：李谦[1] Li Qian(Chengdu Agricultural Science and Technology Vocational College,Chengdu 611130,China)

机构地区：[1]成都农业科技职业学院

出　　处：《防护林科技》2019年第7期13-16,共4页Protection Forest Science and Technology

摘　　要：通过野外调查和室内分析,对成都市草坪绿地土壤理化性质及土壤肥力质量进行了综合分析和评价,结果表明:在0~20 cm土层中,滨河景观草坪土壤容重最大,为1.34 g·cm^-3;公园草坪土壤黏粒含量、田间持水量、碱解氮、速效磷、速效钾、阳离子交换量最高,分别为34.89%、29.48%、60.11 g·kg^-1、4.47 mg·kg^-1、247.92 mg·kg^-1、20.38 cmol·kg^-1;居民小区草坪土壤pH最高。在20~40 cm土层中,居民小区草坪土壤容重最大,为1.39 g·cm^-3,公园草坪田间持水量、黏粒含量、土壤速效磷、速效钾、碱解氮、有机质及阳离子交换量均达到了最大值,分别为28.59%、27.95%、4.47 mg·kg^-1、247.92 mg·kg^-1、53.28 mg·kg^-1、22.97 g·kg^-1、12.28 cmol·kg^-1。土壤肥力排序为公园草坪>居民小区草坪>高校校园草坪>滨河景观草坪;除了居民小区草坪土壤肥力为良外,其他绿地类型综合肥力均为中。Through field investigation and indoor analysis,soil physical and chemical properties of lawn green space in chengdu City were analyzed,the quality of soil fertility was comprehensively evaluated.Result shows that in 0-20 cm soil layer,the riverside landscape lawn soil bulk density is 1.34 g·cm^-3;park lawn soil clay content,field capacity,alkaline hydrolysis nitrogen,available phosphorus and available potassium,cation exchange capacity are all highest,being 34.89%,29.48%,60.11 g·kg^-1 ,and 4.47 mg·kg^-1 ,247.92 mg·kg^-1 ,20.38 cmol·kg^-1 . The soil pH of lawn in residential area is the highest. In 20-40 cm soil layer,the residential area of lawn soil bulk density is 1.39 g·cm^-3;park lawn field capacity,clay content and soil available phosphorus and available potassium,alkali solution nitrogen,organic matter and cation exchange capacity have reach the maximum value,being 28.59%,27.95%,4.47 mg·kg^-1 ,247.92 mg·kg^-1 53.28 mg·kg^-1 ,22.97 g·kg^-1 & 12.28 cmol·kg^-1 . According to the soil fertility comprehensive index,the soil fertility is ranked as park lawn > residential community lawn > college campus lawn > riverside landscape lawn. According to the evaluation results,except for the soil fertility of the residential community,the comprehensive fertility of other green land types is medium.

关 键 词：绿地土壤 理化性质 综合评价 成都市 

分 类 号：S714[农业科学—林学]