College of Agriculture, Shihezi University/Key Laboratory of Oasis Eco-agriculture, Xinjiang Production and Construction Corps, Shihezi, Xinjiang 832003, PR China.
College of Life Sciences, Shihezi University, Shihezi, Xinjiang 832003, PR China.
Sci Total Environ. 2022 Dec 10;851(Pt 1):158132. doi: 10.1016/j.scitotenv.2022.158132. Epub 2022 Aug 22.
Traditional organic fertilizer substitution is an effective measure for increasing crop yield and soil quality while reducing chemical fertilizer input. However, the effects of commercial organic fertilizer substitution (COFS) on soil quality and wheat yield, and the underlying mechanisms, are unknown. In this study, agricultural fields with low fertility (LF) and high (HF) fertility soils were selected for a two-year (2018-2019) field experiment in the oasis region of Northwest China. Three fertilization treatments with three replications (no fertilization, CK; local conventional chemical fertilizer application, LCF; and 20 % of inorganic nitrogen (N) was substituted by commercial organic fertilizer, COFS) were established to study the effects of COFS on wheat growth, yield, nutrient-use efficiency and soil quality. The results showed that compared with LCF in 2018 and 2019, COFS in LF and HF promoted wheat growth, improved nitrogen use efficiency (NUE) and phosphorus use efficiency (PUE), and increased yield (by 1.52 %-3.05 % and 1.16 %-1.39 %) and soil quality (by 15.09 %-28.63 % and 22.53 %-64.82 %) by improving most soil indicators (e.g., soil organic matter (SOM) and available nutrients). Moreover, SOM and available nutrients significantly affect soil quality and wheat yield, which can monitor changes in soil quality and wheat yield. In conclusion, our study revealed that the mechanism of COFS in HF and LF increased wheat yield by improving soil quality. COFS is recommended for agricultural production, but its continuous application requires monitoring changes in SOM and available nutrients to adjust fertilization to guarantee soil quality and crop yield. This study provides guidance for the scientific application of COFS to improve farmland productivity and soil quality and helps to promote healthy and sustainable agricultural development.
传统有机肥替代是提高作物产量和土壤质量、减少化肥投入的有效措施。然而，商业有机肥替代（COFS）对土壤质量和小麦产量的影响及其作用机制尚不清楚。本研究在中国西北绿洲区选择低肥力（LF）和高肥力（HF）农田进行了为期两年（2018-2019 年）的田间试验。设立了 3 种施肥处理，3 次重复（不施肥，CK；当地常规化肥施用，LCF；20%无机氮（N）用商业有机肥替代，COFS），研究 COFS 对小麦生长、产量、养分利用效率和土壤质量的影响。结果表明，与 2018 年和 2019 年 LCF 相比，LF 和 HF 中的 COFS 促进了小麦生长，提高了氮素利用效率（NUE）和磷素利用效率（PUE），增加了产量（提高 1.52%-3.05%和 1.16%-1.39%）和土壤质量（提高 15.09%-28.63%和 22.53%-64.82%），通过改善大多数土壤指标（如土壤有机质（SOM）和有效养分）。此外，SOM 和有效养分显著影响土壤质量和小麦产量，可监测土壤质量和小麦产量的变化。总之，本研究表明，COFS 在 HF 和 LF 中通过改善土壤质量来提高小麦产量的机制。COFS 建议用于农业生产，但需要监测 SOM 和有效养分的变化，以调整施肥，保证土壤质量和作物产量。本研究为 COFS 的科学应用提供了指导，以提高农田生产力和土壤质量，有助于促进健康可持续的农业发展。
