茶园废弃物耦合畜禽粪污制备生物有机肥对茶园土壤磷素利用的影响研究

Effects of Bio-organic Fertilizer Derived from Co-composting Tea Garden Waste and Livestock Manure on Phosphorus Availability in Tea Garden Soils

摘要

为探明生物有机肥对老龄茶园土壤磷素周转特征的影响，本研究以茶园废弃物和畜禽粪污为原料发酵制备生物有机肥，探讨生物有机肥单施、钙镁磷肥单施、钙镁磷肥减半配施生物有机肥对茶园表层土壤pH、有机质、速效磷、颗粒态磷、全磷以及茶叶中可溶性磷、颗粒态磷、全磷的影响。结果表明，在供试土壤和栽培条件下，以茶园废弃物和畜禽粪污为原料制备的生物有机肥可作为一种值得推荐的茶园土壤改良剂。值得关注的是，采用钙镁磷肥减半配施生物有机肥可以更加有效地提升老龄茶园表层土壤pH值、有机质、速效磷、全磷含量，降低土壤颗粒态磷含量，提高茶叶颗粒态磷含量，对于实现茶园磷肥减施增效以及农林废弃物资源化利用提供新的技术方案。

Abstract

To investigate the effects of bio-organic fertilizer on phosphorus cycling characteristics in aged tea garden soils. This study used tea garden waste and livestock manure as raw materials to ferment and produce bio-organic fertilizer, investigating the effects of single application of bio-organic fertilizer, single application of calcium-magnesium phosphate fertilizer, and half-dose co-application of calcium-magnesium phosphate fertilizer with bio-organic fertilizer on soil pH, organic matter, available phosphorus, particulate phosphorus, total phosphorus in the surface layer of tea gardens, as well as soluble phosphorus, particulate phosphorus, and total phosphorus in tea leaves. The results show that, under the tested soil and cultivation conditions, the bio-organic fertilizer prepared from tea garden waste and livestock manure can be regarded as a recommended soil amendment for tea gardens. It is worth noting that using half the amount of calcium-magnesium phosphate fertilizer in combination with bio-organic fertilizer can more effectively increase the pH value, organic matter, available phosphorus, and total phosphorus content in the surface soil of old tea gardens, reduce the content of soil particulate phosphorus, and increase the content of particulate phosphorus in tea leaves. This provides a new technical solution for reducing phosphorus fertilizer application in tea gardens and promoting the resource utilization of agricultural and forestry waste.

关键词

茶园废弃物 / 畜禽粪污 / 生物有机肥 / 磷素利用

Key words

tea-garden waste / livestock and poultry manure / bio-organic fertilizer / phosphorus use efficiency

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基金资助

2024年常州市农业科技创新和示范推广项目(KCSF〔2024〕09)