施用生物炭基肥对喀斯特石灰土磷元素特性的影响

Abstract

PDF HTML阅读 XML下载 导出引用 引用提醒 施用生物炭基肥对喀斯特石灰土磷元素特性的影响 DOI: 10.5846/stxb201706161097 作者: 作者单位: 南京林业大学,南京林业大学,南京林业大学,南京林业大学,南京林业大学 作者简介: 通讯作者: 中图分类号: 基金项目: 国家重点研发计划重点专项（2016YFC0502605）；国家林业局"948"项目（2014-4-24）；“十二五”国家科技支撑计划（2015BAD07B0404）；江苏高校优势学科建设工程资助项目（PAPD） Effects of biochar-based fertilizer on phosphorus content of karst calcareous soil Author: Affiliation: Nanjing Forestry University,,,,Nanjing Forestry University Fund Project: 摘要 | 图/表 | 访问统计 | 参考文献 | 相似文献 | 引证文献 | 资源附件 | 文章评论 摘要:以贵州省喀斯特山地石灰土为研究对象，采用盆栽试验方法，研究施用生物炭（稻壳炭）、猪粪堆肥和NPK肥3种肥料制成的生物炭基肥，测定土壤中不同形态磷含量、碱性磷酸酶活性及刺槐幼苗生物量。试验共设10个处理，分别为CK、M、F、MF、RH1MF、RH2MF、RH4MF、RH8MF、RH4M、RH4F（其中CK代表对照，M代表堆肥，F代表化肥，RH代表稻壳炭，数字代表生物炭按炭土质量比计算在生物炭基肥中的配比）。结果表明，施用生物炭基肥可显著提高喀斯特石灰土中总磷、有效磷、有机磷、微生物量磷含量及刺槐幼苗生物量，生物炭高施用量下处理（RH8MF）的效果更好，且4种不同形态的磷含量相互之间呈极显著正相关（P < 0.01）；生物炭中等用量配比下生物炭基肥处理（RH2MF、RH4MF）的土壤碱性磷酸酶活性最高，分别比CK提高82.7%、63.4%。综上所述，施用生物炭基肥，尤其在生物炭较高施用量下，可以显著改善喀斯特石灰土中磷素含量，可改善石灰土中磷素含量较低状况，提高喀斯特山地人工幼林地生态恢复的成效。 Abstract:This study conducted a pot experiment using karst calcareous soil from Guizhou province, focusing on the effects of biochar-based fertilizer (made from rice-husk-derived biochar, pig manure compost, and NPK fertilizer) on the contents of various types of soil phosphorus, soil alkaline phosphatase activity, and biomass of black locust seedlings. Ten treatments were set up:CK, M, F, MF, RH1MF, RH2MF, RH4MF, RH8MF, RH4M,and RH4F (CK is control, M is compost, F is NPK fertilizer, RH is rice-husk-derived biochar and the number is the amount of biochar in the treatment based on the ratio of biochar to soil). Our results showed that the application of biochar-based fertilizer could significantly increase the contents of soil total phosphorus, available phosphorus, organic phosphorus, microbial biomass phosphorus, and seedling biomass, with the strongest effects with the highest biochar application rate (RH8MF). The above 4 different types of phosphorus showed highly significant positive correlations (P < 0.01) with each other. The soil alkaline phosphatase activity was highest with the treatments with the medium biochar application rates (RH2MF and RH4MF), at 82.7% and 63.4% higher than CK respectively. In conclusion, biochar-based fertilizer application, especially at higher biochar addition rates, significantly increased phosphorus content of karst calcareous soil and improved the low-content status, so as to improve the effects of ecological restoration of young artificial woodlands in karst areas. 参考文献 相似文献 引证文献