Coastal saline soil aggregate formation and salt distribution are affected by straw and nitrogen application: A 4-year field study

Xie, Wenjun; Chen, Qing-Feng; Wu, Lei; Yang, Hongjun; Xu, Jikun; Zhang, Yanpeng

doi:10.1016/j.still.2019.104535

Cited by 56 publications

(19 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Zhang et al (2014) suggest that straw deposition at a rate of 9 × 10 3 kg ha −1 enhanced the macroaggregate content of topsoil. With the improvement of soil aggregate structure and the enhancement of soil porosity, the capability of the soil to inhibit the migration of P from soil is also enhanced (Xie et al, 2020). Straw deposition also affects the transformation of different fractions of P (Ding et al, 2012) and can improve the abundance and activity of soil microbes, which is conducive to the transformation of organic P into inorganic P (Yang et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Maize straw and its biochar affect phosphorus distribution in soil aggregates and are beneficial for improving phosphorus availability along the soil profile

Cao

Lan

Sun

et al. 2021

European J Soil Science

View full text Add to dashboard Cite

Return of crop straw and its biochar to the agricultural field decreases pressure on phosphorus (P) resources and reduces leaching and P runoff. We conducted a 5‐year field trial from 2013 to 2017 to study the capability of maize straw and its biochar to retain soil P, which was quantified by investigating the distribution of P fractions in the soil profile (0–100 cm) and soil aggregates of different grain sizes. The impact of soil treatments with nitrogen‐phosphorus‐potassium (NPK) fertiliser alone or combined with biochar or maize straw were examined. We found that maize straw and its biochar increased soil aggregate stability, which showed an increase in mean weight diameter, geometric mean diameter, and aggregates with diameter > 250 μm. Maize straw and its biochar promoted both inorganic (dicalcium phosphate dehydrate [Ca2‐P], octocalcium phosphate [Ca8‐P], aluminium phosphate [Al‐P], iron phosphate [Fe‐P], hydroxyapatite [Ca10‐P], and occluded phosphate [O‐P]) and organic (labile organic phosphorus, LOP, and moderately labile organic phosphorus, MLOP) P accumulation and stabilization in soil aggregates, especially in small macroaggregates of 250–2000 μm. Total phosphorus (TP), Ca8‐P, Fe‐P, LOP, MLOP, moderately resistant organic phosphorus (MROP) and highly resistant organic phosphorus (HROP) were enhanced by maize straw and its biochar, whereas Ca2‐P and O‐P were decreased in the 0–20‐cm topsoil. We measured decreased TP, Fe‐P, O‐P and Ca10‐P in the 40–100‐cm soil layer following maize straw and biochar deposition, whereas higher Ca2‐P, Al‐P, MROP and HROP were obtained in maize straw‐supplemented soil relative to NPK fertiliser treatment in the 20–100‐cm soil layer. Thus, maize straw and its biochar can be used to effectively improve soil structure to support P retention and biochar has the potential to reduce P leaching from the soil profile. Highlights Maize straw and its biochar effectively improved soil structure to support P retention Inorganic and organic P fractions mainly accumulated in the small macroaggregate fraction Biochar has the potential to reduce P leaching in the soil profile

show abstract

Section: Introductionmentioning

confidence: 99%

Maize straw and its biochar affect phosphorus distribution in soil aggregates and are beneficial for improving phosphorus availability along the soil profile

Cao

Lan

Sun

et al. 2021

European J Soil Science

View full text Add to dashboard Cite

show abstract

“…Straw returning reduced soil bulk density (Table 1). It can also promote soil particle aggregation and aggregate stability [40] and increase soil porosity and soil moisture [4] .…”

Section: Discussionmentioning

confidence: 99%

Evaluation of ecosystem service of straw return to soil in a wheat field of China

Cui

Cao

Zhu

2021

International Journal of Agricultural and Biological Engineering

View full text Add to dashboard Cite

Crop straw is an important natural resource in China because it is rich in nutrients. When returned to fields after harvests, the straw can improve soil quality and the next crop's yield. Evaluating the economic values of the main ecological services of a farmland ecosystem while implementing the straw return technique can be a more systematic and comprehensive approach to better understand the contribution of straw return to the development of ecological agriculture. Based on the data of a field experiment established in 2010 with varying numbers of years of straw return, four ecological services, i.e., agricultural product and industrial raw materials, atmospheric regulation and purification, soil nutrient accumulation, and water conservation, were selected to estimate a net ecosystem service value (ESV) of a wheat field's ecosystem services. Agro-ecosystem service appraisal theories were applied to estimate the economic value of each service. Results showed that straw returning improved the total ESV in the wheat system. Compared to the no straw return treatment, 1 year, 3 years, 5 years or 7 years of straw returning altered the economic value of the agricultural product and industrial raw materials (EVAIM) by -5.93% to 7.84% and improved atmospheric regulation (EVAR) by 13.66%-30.80%, soil nutrient accumulation (EVSNA) by 59.87%-233.31% and water conservation (EVWC) by 2.60%-13.26%. The total ESV of wheat plots with 1-7 years of straw returning was 3.67%-27.41% higher than that with no straw return, and the total ESV increased with the increase in years of straw return. The proportion of EVAIM out of the total ESV in this wheat field system was highest (accounted for 47.09%-55.64%), followed by EVAR and EVWC. The value of EVSNA was the lowest. However, the proportion of EVSNA was higher than that of water conservation after the fifth year of straw return. In general, the adoption of continuous straw returning in a wheat field ecosystem is ecologically valuable. The results can inform the development and implementation of ecological compensation policies involving straw return.

show abstract

“…Studies have shown that straw return to the field can promote soil aggregation 26 . However, we found different results probably due to the slow degradation of straw in the low and arid climate of Northeast China, which resulted in low amounts of cohesive substances and polysaccharides that are important drivers of soil aggregation 27 .…”

Section: Discussionmentioning

confidence: 99%

Synergistic effects of crop residue and microbial inoculant on soil properties and soil disease resistance in a Chinese Mollisol

Liu

Wang

et al. 2021

Sci Rep

View full text Add to dashboard Cite

The soil-borne disease caused by Fusarium graminearum seriously affects the corn quality. Straw can greatly improve soil quality, but the effect is limited by its nature and environmental factors. This study explored the impact of straw-JF-1(biocontrol bacteria) combination on soil environment and soil disease resistance. The results showed that the combined treatment increased the proportion of soil large and small macro-aggregates by 22.50 and 3.84%, with soil organic carbon (SOC) content by 16.18 and 16.95%, respectively. Compared to treatment with returning straw to the field alone, the straw-JF-1 combination increased the soil content of humic acid, fulvic acid, and humin by 14.06, 5.50, and 4.37%, respectively. Moreover, A metagenomics showed that returning straw to the field alone increased the abundance of disease-causing fungi (Fusarium and Plectosphaerella), however, the straw-JF-1 combination significantly suppressed this phenomenon as well as improved the abundance of probiotic microorganisms such as Sphingomonas, Mortierella, Bacillus, and Pseudomonas. Functional analysis indicated that the combination of straw and JF-1 improved some bacterial functions, including inorganic ion transport and metabolism, post-translational modification/protein turnover/chaperones and function unknown, fungal functions associated with plant and animal pathogens were effectively inhibited. Pot experiments showed that the straw-JF-1 combination effectively inhibited the Fusarium graminearum induced damage to maize seedlings. Therefore, the combination of straw and JF-1 could be a practical method for soil management.

show abstract

Coastal saline soil aggregate formation and salt distribution are affected by straw and nitrogen application: A 4-year field study

Cited by 56 publications

References 39 publications

Maize straw and its biochar affect phosphorus distribution in soil aggregates and are beneficial for improving phosphorus availability along the soil profile

Maize straw and its biochar affect phosphorus distribution in soil aggregates and are beneficial for improving phosphorus availability along the soil profile

Evaluation of ecosystem service of straw return to soil in a wheat field of China

Synergistic effects of crop residue and microbial inoculant on soil properties and soil disease resistance in a Chinese Mollisol

Contact Info

Product

Resources

About