华北农学报

所属专题: 土壤肥料

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菜田土壤有效磷供应临界指标分析

李宇虹, 刘朋朋, 严正娟, 陈清   

  1. 中国农业大学资源与环境学院, 北京 100193
  • 收稿日期:2012-08-20 出版日期:2012-12-31
  • 通讯作者: 陈 清(1968 - ), 男, 山东文登人, 教授, 博士, 主要从事经济作物养分管理与土壤质量研究。
  • 作者简介:李宇虹(1989 - ), 女, 湖南保靖人, 在读硕士, 主要从事蔬菜养分管理研究。
  • 基金资助:
    果类蔬菜产业技术体系北京市创新团队及公益性行业(农业)科研专项“农作物最佳养分管理技术研究与应用”(201103003)

Determination of Critical Soil Available P Supply Levels for Vegetable Field

LI Yu-hong, LIU Peng-peng, YAN Zheng-juan, CHEN Qing   

  1. College of Resources and Environmental Sciences,China Agricultural University,Beijing 100193,China
  • Received:2012-08-20 Published:2012-12-31

摘要: 确定土壤有效磷供应临界值,对于菜田磷素推荐具有重要的参考价值。蔬菜根系浅、根长密度低的特征,以及受反季节设施栽培的影响,导致了大多数蔬菜对土壤有效磷供应强度的要求明显高于粮食作物。本研究汇总分析了近20年来发表的20余篇相关中文文献及在北京郊区的试验结果,计算了主要蔬菜的氮磷钾养分吸收参数及吸收比例,采用线性加平台方程拟合获得了一般菜田土壤有效磷的供应临界值,并对其影响因素进行了剖析。结果表明,在当季不施有机肥条件下,北方露地菜田土壤有效磷的供应临界值为27.0 mg/kg P;果类蔬菜的土壤有效磷供应临界值为56.7 mg/kg P,明显高于叶类蔬菜的临界值39.1 mg/kg P;施用有机肥显著降低了露地菜田土壤有效磷供应临界值;设施菜田土壤有效磷供应临界值高于同样施用了有机肥的露地菜田。

关键词: 蔬菜, 有效磷, 临界值, 磷素吸收, 推荐

Abstract: The determination of the critical soil available P value plays significant role in P recommendation invegetable fields. Most vegetables, with the characteristics of shallow root system and low root length density, especially under off-season cultivation in protected field, required high P supply level, in comparison to cereal crops. Thepaper summarized the results on crop responses to soil P fertility from 20 published papers and selected field trialsin the last 20 years, in order to get the critical value of soil available P supply in vegetable fields. The results showedthat the critical value of soil available P in open field of North China without manure as basal fertilization was 27. 0mg /kg P, the critical value of soil P value in fruit vegetable was 56. 7 mg /kg P, significantly higher than that of leafyvegetable 39. 1 mg /kg P. The critical value of soil available P in-season decreased with manure application. Thecritical value of soil available P in protected fields was higher than those in open fields with manure.

Key words: Vegetables, Soil available phosphorous, Critical value, Phosphorous uptake, Recommendation

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引用本文

LI Yu-hong, LIU Peng-peng, YAN Zheng-juan, CHEN Qing. Determination of Critical Soil Available P Supply Levels for Vegetable Field[J]. ACTA AGRICULTURAE BOREALI-SINICA, doi: 10.3969/j.issn.1000-7091.2012.z1.067.

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