Tillage and residue management for long-term wheat-maize cropping in the North China Plain: I. Crop yield and integrated soil fertility index

Zhang, Xianfeng; Zhu, Anning; Xin, Xiaozhou; Yang, Wenliang; Zhang, Jiabao; Ding, Shijie

doi:10.1016/j.fcr.2018.02.025

Cited by 66 publications

(47 citation statements)

References 59 publications

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“…Straw return management significantly improved the aggregate‐associated C at both experimental sites, our findings are consistent with (Huang et al, 2017; Zhao et al, 2018). Fresh Straw addition could be responsible for substrate microorganisms (An et al, 2015), and a direct accumulation of SOC (Zhang et al, 2018), particularly in >.25 soil aggregates (Zhang, Xin, et al, 2017; Zhao et al, 2018). In our study, macroaggregate size fractions were found to receive more SOC than microaggreagtes (Table 3).…”

Section: Discussionmentioning

confidence: 99%

Straw management stabilizes the chemical composition ofSoil Organic Carbon (SOC): the relationship with aggregate‐associated C in a rice‐rape cropping system

Kubar

Xue

et al. 2020

Land Degrad Dev

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Soil organic matter stored in soil aggregate fractions is a major soil organic carbon (SOC) stabilization process. The distribution of SOC within soil aggregate fractions and their association with SOC chemical compounds in the agroecosystem is not well understood. Our long‐term study (6 and 9 years) in central China examined the effects of tillage and straw management practices on chemical functional components of SOC, SOC contents of soil aggregates, and the relationship of the SOC composition with aggregate‐associated C in a rice‐rape cropping system. The soil samples from 2 sites were separated into six aggregate classes (>5, 5–2, 2–1, 1–0.5, 0.5–0.25, and <0.25 mm) by a wet‐sieving method. Chemical composition of SOC was assessed by CPMAS 13C NMR, FTIR and SEM techniques. Among all chemical components of the SOC, O‐alkyl C was the most important C type, which increased (about 54–110%) at both our sites, although aromatic C increased (about 30%) and carbonyl C decreased at one site ‐ Jingzhou after straw was returned. While, aromatic, carboxylic, aliphatic and amide components were stabilized after straw return. Alkyl C and O‐alkyl C ratio were enhanced after straw return but the aromaticity index and hydrophobicity index altered in the studied sites. Among all defined aggregates, approximately 10–18% of SOC was stored in >5 mm, 5–2 mm, 2–1 mm aggregates and 5–10% was stored in other aggregate fractions (1–0.5 mm, 0.5–0.25 mm and <0.25 mm) after straw return. SOC Chemical components were positively and negatively correlated with aggregate‐associated C fractions. This study concluded that straw management improved the chemical composition of SOC and increased the SOC contents of bulk soil as well as helped store more organic matter in macroaggregates.

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Section: Discussionmentioning

confidence: 99%

Straw management stabilizes the chemical composition ofSoil Organic Carbon (SOC): the relationship with aggregate‐associated C in a rice‐rape cropping system

Kubar

Xue

et al. 2020

Land Degrad Dev

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“…The variance of homogeneity was determined using the Levene’s test 3 and the normality of data was evaluated by the Shapiro–Wilk’s test 48 . The soil properties, root traits, GY and WUE were statistically analyzed to test for differences among four tillage treatments, using the analysis of variance (ANOVA; α = 0.05) followed by least significant difference tests.…”

Section: Methodsmentioning

confidence: 99%

“…Winter wheat ( Triticum aestivum L.), sown in the Huang-Huai-Hai Plain (3HP), the largest, highly productive plain in China 1 . However, the structural stability and nutrient content of the soil in this region has been destroyed by intensive and continuous conventional tillage practices resulting in reduced crop productivity 2,3 . Before 1990s, plowing tillage increases soil bulk density (BD) and decreases energy efficiency and economics, thus, reducing water storage capacity and nitrogen (N) accumulation 4 .…”

Section: Introductionmentioning

confidence: 99%

Strip rotary tillage with a two-year subsoiling interval enhances root growth and yield in wheat

Zhao

et al. 2019

Sci Rep

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Excessive tillage and soil compaction threaten the sustainable farmlands in the Huang-Huai-Hai Plains of China. Our study explores tillage practices to improve soil and root ecology and promote productivity in the winter wheat fields. We tested the impact of plowing, rotary, strip rotary tillage and strip rotary tillage with a two-year subsoiling interval (SRS) on wheat yield and root quality. SRS decreased soil bulk density compared with other treatments, resulting in lower soil penetration resistance. Root morphology and weight density decreased with the increased soil depth and was higher in SRS. Moreover, SRS increased the indoleacetic acid and trans zeatin riboside levels corresponding to greater TTC reduction activities, the total and active absorption root area. SRS increased the superoxide dismutase and catalase activities and soluble protein concentration and decreased the malondialdehyde concentration. The first two factors extracted using 11 root attributes in various soil layers through principal component analysis were selected as the integrated indicators for the minimum data set, and their integrated score was calculated to quantify the root quality. Our study suggests that SRS could significantly improve root morphology and enhance the root activity in subsoil layers, thus, delaying root senescence and increasing winter wheat yield.

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“…This disparity might be due to the following reasons: (a) the destruction of macro-aggregates under CT accelerates the mineralisation of SOM and thus provides more mineral N at the sowing stage (Zhang, Zhu, et al, 2018); (b) mulching with straws leads to higher N immobilisation under conservation tillage at the sowing stage (Camarotto et al, 2018);…”

Section: Soil Chemical Propertiesmentioning

confidence: 99%

The effects of eight years of conservation tillage on the soil physicochemical properties and bacterial communities in a rain‐fed agroecosystem of the loess plateau, China

Sun

Wang

et al. 2020

Land Degrad Dev

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Conservation tillage is an alternative to conventional tillage (CT) for addressing the issue of soil degradation, while how it affects soil quality remains unclear. To characterise the temporary and stable effects of 8 years of conservation tillage on soil quality, topsoil (0-20 cm) properties, 16S rDNA-based bacterial community properties and their relationships were analysed. Three tillage practices (CT [as the control], subsoiling tillage [ST] and no tillage [NT]) were compared at the sowing and harvest stages of a continuous winter wheat (Triticum aestivum L.) system. The mean weight diameter of the water-stable aggregate, organic matter, total N/P/K and available K consistently improved with NT at both crop stages, with averages of 26.8, 35.3, 38.5, 29.2, 13.1 and 59.1%, respectively. Similar but lower levels of improvements were observed under ST. Tillage did not significantly affect soil bulk density, penetration resistance and temperature, whereas NT significantly decreased capillary porosity by 7.9% at sowing. At the sowing stage, CT showed higher bacterial α/β-diversity but lower soil water content and abundances of N-cycling bacteria. The physicochemical properties showed significant correlation with the abundances of some genera belonging to Proteobacteria, Nitrospirae and Actinobacteria. After 8 years of experimentation, we found that conservation tillage, especially NT, resulted in stable effects on soil aggregation and nutrient storage. Although soil compaction temporarily decreased after CT, the bacterial community, soil water storage and the aforementioned stable effects were more favourable for soil sustainability under conservation tillage.

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Tillage and residue management for long-term wheat-maize cropping in the North China Plain: I. Crop yield and integrated soil fertility index

Cited by 66 publications

References 59 publications

Straw management stabilizes the chemical composition ofSoil Organic Carbon (SOC): the relationship with aggregate‐associated C in a rice‐rape cropping system

Straw management stabilizes the chemical composition ofSoil Organic Carbon (SOC): the relationship with aggregate‐associated C in a rice‐rape cropping system

Strip rotary tillage with a two-year subsoiling interval enhances root growth and yield in wheat

The effects of eight years of conservation tillage on the soil physicochemical properties and bacterial communities in a rain‐fed agroecosystem of the loess plateau, China

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