苹果梨园土壤pH值与速效磷的变化规律研究  

Variation of pH and available phosphorus in soil apple-pear orchard

作　　者：宋涛[1] 朴世领[1] 陈旸 刘雪 梁运江[1] 许广波[1] SONG Tao;PIAO Shiling;CHEN Yang;LIU Xue;LIANG Yunjiang;XU Guangbo(Agricultural College of Yanbian University,Yanji Jilin 133002,China;Station for Popularizing Agricultural Technique Wangqing Town,Wangqing Jilin 133200,China)

机构地区：[1]延边大学农学院,吉林延吉133002 [2]吉林省汪清县汪清镇农业技术推广站,吉林汪清133200

出　　处：《延边大学农学学报》2018年第3期9-15,共7页Agricultural Science Journal of Yanbian University

基　　金：国家自然科学基金项目(31460117);延边大学2018年大学生创新创业训练计划项目(ydcxcy2018031)

摘　　要：为研究延边地区苹果梨园土壤pH值及速效磷与苹果梨树栽植年限、土层深度和季节更替的变化规律,在苹果梨园内布置剖面点,按照土壤自然分层采集样品,采用电位法和Bray法分别测定土壤pH值与速效磷含量。结果表明:延边地区苹果梨园土壤pH值与速效磷的变化分别为4.13~6.64与0.16~46.59mg/kg;土壤pH值受季节变化影响较小,但随着土层加深,pH值升高,且随着栽植年限的增加,土壤pH值呈先降低后升高的趋势,种植25年的土壤pH值最低;土壤速效磷含量随着季节变化而变化,土层越深,速效磷含量越低,随着栽植年限的增加,速效磷含量呈先升高后降低的趋势,而且与pH值呈负相关。In order to study the changes of soil pH and available phosphorus in apple-pear orchards of Yanbian area with the planting years of apple-pear trees,soil depth and seasonal change,profiles were arranged in apple-pear orchards.Samples were collected according to natural horizens of soil,and the soil pH and available phosphorus contents were determined by potentiometry and Bray method,respectively.The results showed that the variation ranges of soil pH and available phosphorus were 4.13-6.64 and 0.16-46.59 mg/kg respectively in apple-pear orchards of Yanbian area,and the influence of seasonal variation on soil pH was small,but with the deepening of soil layer,soil pH increased,and with the increase of planted for years,soil pH decreased first and then increased,the minimum pH was in soil planted for 25 years;The content of soil available phosphorus changed with the season.The deeper the soil layer,the lower the content of soil available phosphorus.With the increase of planting years,the content of soil available phosphorus increased first and then decreased,and showed a negative correlation with pH value.

关 键 词：土壤PH值 栽植年限 土层 苹果梨园 

分 类 号：S661.2[农业科学—果树学]