Subsurface manure application enhances soil quality, ecosystem multifunctionality, and crop yield in the North China Plain

IF 4.8 2区 农林科学 Q1 SOIL SCIENCE
Haoruo Li , Yiwei Shang , Jiansheng Gao , Hongyuan Zhang , Haotian Chen , Xiquan Wang , Jianjun Guo , Xia Zhang , Jing Wang , Yuyi Li
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引用次数: 0

Abstract

Subsurface manure application has been suggested as a priming strategy to improve soil fertility and potentially enhance crop yield quickly. However, the soil quality and ecosystem multifunctionality responses and their relationship with crop yield remain uncertain. Here, a two-year field experiment was conducted to investigate the effects of different subsurface manure application methods (1T, one-time fertilization; and 2T, two-time split fertilization during two consecutive years) with the same manure amount on soil quality index (SQI), ecosystem multifunctionality (EMF), and crop yield in the North China Plain. Compared to control (no manure application, CK), 1T increased SQI at both 0–20 and 20–40 cm soil layers by 15–19 % in the first year, but no change in the second year. As a comparison, 2T increased SQI at 0–20 and 20–40 cm soils by 37–42 % compared to CK in the second year. Meanwhile, 2T increased soil EMF at 0–20 cm (0.4 unit) compared to CK over the two years. Both 1T and 2T increased soil EMF at 20–40 cm (0.1–0.8 unit) over the two years. The crop yield was positively related to surface SQI and subsurface EMF regardless of manure application method. Soil organic C, total C, total N, total P, and the C and P cycling-related enzyme activities were key factors that contributed to the improvement of SQI and EMF. The partial least squares path models revealed that the two subsurface manure application methods enhanced surface SQI and subsurface EMF by improving topsoil nutrients and subsoil enzyme activities separately, consequently increasing crop yield. Overall, our results documented that subsurface manure application is an effective strategy for improving soil quality and crop yield.

Abstract Image

地表下施肥可提高华北平原的土壤质量、生态系统多功能性和作物产量
有人建议将地表下施肥作为改善土壤肥力和快速提高作物产量的初步策略。然而,土壤质量和生态系统多功能性响应及其与作物产量的关系仍不确定。本文通过为期两年的田间试验,研究了在施肥量相同的情况下,不同地表下施肥方法(1T,一次性施肥;2T,连续两年分两次施肥)对华北平原土壤质量指数(SQI)、生态系统多功能性(EMF)和作物产量的影响。与对照组(不施用粪肥,CK)相比,1T 在第一年使 0-20 厘米和 20-40 厘米土层的 SQI 提高了 15-19%,但第二年没有变化。相比之下,与 CK 相比,2T 在第二年使 0-20 和 20-40 厘米土层的 SQI 提高了 37-42%。同时,与 CK 相比,2T 在两年中增加了 0-20 厘米处的土壤 EMF(0.4 个单位)。在这两年中,1T 和 2T 都增加了 20-40 厘米处的土壤电磁场(0.1-0.8 个单位)。无论采用哪种施肥方法,作物产量都与地表 SQI 和地下 EMF 呈正相关。土壤有机碳、总碳、总氮、总磷以及与碳和磷循环相关的酶活性是促进 SQI 和 EMF 提高的关键因素。偏最小二乘法路径模型显示,两种地下粪肥施用方法分别通过改善表层土壤养分和底层土壤酶活性提高了地表 SQI 和地下 EMF,从而提高了作物产量。总之,我们的研究结果表明,地表下施肥是提高土壤质量和作物产量的有效策略。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Applied Soil Ecology
Applied Soil Ecology 农林科学-土壤科学
CiteScore
9.70
自引率
4.20%
发文量
363
审稿时长
5.3 months
期刊介绍: Applied Soil Ecology addresses the role of soil organisms and their interactions in relation to: sustainability and productivity, nutrient cycling and other soil processes, the maintenance of soil functions, the impact of human activities on soil ecosystems and bio(techno)logical control of soil-inhabiting pests, diseases and weeds.
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