农业资源与环境学报2017，Vol.34Issue(4)：368-375,8.DOI:10.13254/j.jare.2016.0289
模拟淋溶条件下沼液对 菜田土壤磷素淋洗及其形态的影响
Effects of Application of Biogas Slurry on the Form and Mobility of Soil Phosphorus in Vegetable Greenhouse Field
摘要
Abstract
A packed soil column experiment was conducted to investigate the effects of biogas slurry on phosphorus(P)form and mobility in a vegetable greenhouse soil with different P fertility levels. The results showed that application of biogas slurry all significantly reduced leachate volume and total phosphorus leaching in the experimental soil with different fertility levels. Compared with control treatments, the application of biogas slurry decreased total phosphorus content in leachate by 722.3 μg·column-1 through reducing leachate volume. Total inorganic phosphorus(TIP)decreased by 507.2μg·column-1 and 1319μg·column-1 in the moderate-P-fertility and high-P-fertility soil, respectively. Dissolved inorganic phosphorus(DIP)was decreased by 158.1μg·column-1 and 474.3μg·column-1 in the low-P-fertility and moderate-P-fertility soil, respectively. In low-P-fertility soil, biogas slurry application significantly increased soil total P, Olsen-P and organic P in 0~7 cm soil depth by a proportion of 34.8%, 37.7%and 148%, respectively. It also reduced soil pH by 0.39 units. In 7~14 cm soil depth, biogas slurry application significantly increased soil total P, Olsen-P and organic P by a proportion of 18.5%, 29.3%and 32.9%, respectively. Soil pH was also decreased by 0.28 units. In moderate-P-fertility soil, application of biogas slurry had no significantly influence on soil total P, but increased soil Olsen-P by 20.1%in 0~7 cm soil depth compared with control treatment. In 7~14 cm soil depth, application of biogas slurry reduced soil pH by 0.33 units. In high-P-fertility soil, application of biogas slurry had no significantly influence on soil total P, Olsen-P and organic P in 0~7 cm soil depth compared with control treatment. In 7~14 cm soil depth, application of biogas slurry reduced soil pH by 0.34 units. In conclusion, application of biogas slurry significantly increased different forms of phosphorus contents in low-P-fertility soil, however, there was no significantly difference on the P forms in moderate-P-fertility soil and high-P-fertility soil.关键词
沼液/土壤磷素形态/磷素淋洗Key words
biogas slurry/soil phosphorus forms/phosphorus leaching分类
农业科技引用本文复制引用
王敏锋,陈硕,朱謇,刘石磊,陈清,李吉进,许俊香..模拟淋溶条件下沼液对 菜田土壤磷素淋洗及其形态的影响[J].农业资源与环境学报,2017,34(4):368-375,8.基金项目
公益性行业(农业)科研专项(201303089- 2) （农业）
北京市科技计划项目(D161100005516003) （D161100005516003）
北京市农林科学院青年科研基金(QNJJ201413) （QNJJ201413）
北京市农林科学院科技创新能力建设专项(KJCX20151205) （KJCX20151205）
