渭北黄土坮塬区苹果园土壤养分状况分析  

Soil Nutrients of Apple Orchard in Loess Tableland of Weibei Arid Plateau

作　　者：梁关会 刘林[2] 权定国 吕家珑[2] 

机构地区：[1]兴平市农业科学技术推广站,陕西兴平713100 [2]西北农林科技大学资源环境学院,陕西杨凌712100 [3]乾县土壤肥料工作站,陕西乾县713300

出　　处：《陕西林业科技》2013年第5期1-4,共4页Shaanxi Forest Science and Technology

基　　金：国家自然科学基金资助项目(40471069)

摘　　要：采用常规方法测定了渭北黄土坮塬区110个苹果园的土壤养分含量,结果表明苹果园0～30 cm土层土壤有机质含量8.9～12.1 mg·kg-1,平均为10.05 mg·kg-1,属较低水平；有效氮、磷、钾供应状况大约为钾＞氮＞磷,按照农田土壤养分丰缺指标衡量,果园土壤普遍缺磷,约40％土壤缺氮,而钾素含量较为丰富；有效铁、锌、锰含量大部分在边缘值以下,其比例分别为铁64.5％、锌83.4％、锰91.3％,缺乏程度依次为Mn＞Zn＞Fe,远远不能满足苹果优质、高产之需要.110 apple orchards were sampled to test the soil nutrients in the loess tableland of Weibei ar- id plateau. The result showed that organic matters in 0--30 cm layer of soil range from 8.9 to 12. ling kg-1 , with an average of 10.05mg kg-1 ;effective N,P and K are in the order of content K〉N〉 P, indicating overall lack of P according to the criteria for production and 40% of soil in short of N.

关 键 词：渭北黄土坮塬区 苹果园 土壤养分 

分 类 号：S153.61[农业科学—土壤学]