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Changes in carbon and phosphorus storages and humic substances in a Ferralsol, after tillage and animal manures applications
Soil and Tillage Research ( IF 6.1 ) Pub Date : 2022-03-08 , DOI: 10.1016/j.still.2022.105358
José Francirlei Oliveira 1 , Jean Carlo Santos de Oliveira 2 , Danilo Bernardino Ruiz 1 , Graziela Moraes de Cesare Barbosa 1 , João Tavares Filho 3
Affiliation  

The evaluation of the dynamics of storage and loss of soil organic carbon (OC) and available phosphorus, associated with humic substances, in areas under no-tillage (NT) that receive solid or liquid animal manure, has been little reported in the literature. This study aimed to evaluate the effect of different doses of liquid (liquid swine slurry) and solid (poultry manure) animal manures on OC and available phosphorus (PAV.) storages and humic substances (fulvic and humic acids, and humin) of a Ferralsol recently managed under a no-tillage system (four years). The experiment was carried out in a very clay Ferralsol. Two periods were sampled: in 2011, before tillage for incorporation of chemical fertilizer (CF) and start of the NT system, and in 2015, after four years of NT management and animal manure applications. Poultry manure (PM) and liquid swine slurry (LSS) were applied in three rates as follows: 2.00, 5.00, and 8.00 t ha−1 of PM and 45.00, 90.00, and 135.00 m3 ha−1 of LSS semi-annually applied without CF complementation. The CF was used as a reference. The use of LSS recovered the OC content of the 0.00–0.10 m depth at levels similar to those observed in 2011, indicating the interaction of the liquid form with the soil. The similarity of humic substance between CF and animal manures of the 0.00–0.10 and 0.10–0.20 m depths was mainly due to LSS use, which contents of fulvic and humic acids were significantly higher than those observed in the soil that received PM. Although the use of the LSS increased the SOC content, no difference in storage was observed among the treatments. Soil tillage for NT system start and CF use resulted in a PAV storage loss of − 2 kg ha−1 yr−1 in 0.10–0.20 m depth from 2011 to 2015. The LSS promoted PAV. sequestration of up to 33.50 Kg ha−1 yr−1 at 0.00–0.10 m depth and 19.93 Kg ha−1 yr−1 at 0.10–0.20 m depth. The LSS was more effective in increasing PAV. storage at the two soil depths compared to CF and PM. The fulvic and humic acids were more than two times higher in LSS than in the PM applications at 00.00–0.10 and 0.10–0.20 m depths. Thus, the liquid form has a greater potential to recover OC content and PAV storage after short-term of NT start (four years), indicating that it is more suitable for the recovery of Ferralsols recently tillage or degraded.



中文翻译:

耕作和施用动物粪便后,Ferralsol 中碳和磷储存量和腐殖质的变化

在接受固体或液体动物粪便的免耕 (NT) 地区,与腐殖质相关的土壤有机碳 (OC) 和有效磷的储存和损失动态评估在文献中很少见报道。本研究旨在评估不同剂量的液体(液体猪粪)和固体(家禽粪便)动物粪便对 OC 和有效磷 (P AV.)最近在免耕系统(四年)下管理的 Ferralsol 的储存和腐殖质(黄腐酸和腐殖酸和腐殖质)。实验是在非常粘土的 Ferralsol 中进行的。抽样了两个时期:2011 年,在施用化肥 (CF) 和 NT 系统启动之前,以及 2015 年,在 NT 管理和动物粪便施用四年之后。家禽粪便 (PM) 和液体猪粪 (LSS) 以如下三种速率施用:PM 的 2.00、5.00 和 8.00 t ha -1和 45.00、90.00 和 135.00 m 3 ha -1LSS 每半年应用一次,没有 CF 补充。CF 用作参考。LSS 的使用使 0.00-0.10 m 深度的 OC 含量恢复到与 2011 年观察到的水平相似的水平,表明液体形式与土壤的相互作用。CF 与 0.00-0.10 和 0.10-0.20 m 深度的动物粪便之间腐殖质的相似性主要是由于 LSS 的使用,其中富里酸和腐殖酸的含量显着高于在接受 PM 的土壤中观察到的含量。尽管 LSS 的使用增加了 SOC 含量,但在处理之间没有观察到储存差异。NT 系统启动和 CF 使用的土壤耕作导致 P AV储存损失 - 2 kg ha -1 yr -1从 2011 年到 2015 年在 0.10-0.20 m 深度。LSS 促进了 P AV。在 0.00–0.10 m 深度处封存高达 33.50 Kg ha -1 yr -1 ,在 0.10–0.20 m 深度处封存高达 19.93 Kg ha -1 yr -1。LSS 在增加 P AV 方面更有效。与 CF 和 PM 相比,在两个土壤深度的储存。在 00.00-0.10 和 0.10-0.20 m 深度,LSS 中的黄腐酸和腐植酸是 PM 应用中的两倍多。因此,液体形式在 NT 开始短期(四年)后具有更大的恢复 OC 含量和 P AV储存的潜力,表明它更适合于最近耕作或退化的 Ferralsols 的恢复。

更新日期:2022-03-08
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