Sustaining crop production in China's cropland by crop residue retention: A meta‐analysis

Zhao, Xin; Liu, Bing‐Yang; Liu, Shengli; Qi, Jianying; Wang, Xing; Pu, Chao; Li, Shuaishuai; Zhang, Xiong‐Zhi; Yang, Xiaoguang; Lal, Rattan; Chen, Fu; Zhang, Hai‐Lin

doi:10.1002/ldr.3492

Cited by 123 publications

(58 citation statements)

References 86 publications

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“…This can solve problems that can't be solved by a single study. The effects of crop residue return on crop yields and WUE have been widely investigated using different methods, including meta-analysis [19,20,21]. For example, by applying a meta-analysis method, Yu et al [20] showed that crop residue return can significantly improve maize grain yields and WUE in Northern China because it enhances the soil hydrothermal environment.…”

Section: Introductionmentioning

confidence: 99%

A meta-analysis of the effects of crop residue return on crop yields and water use efficiency

Lü

2020

PLoS ONE

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After harvesting agricultural crops, the residue can be returned to the soil as mulch. This study performed a meta-analysis of previous research to investigate the effects of crop residue return and other factors on crop yields and water use efficiency (WUE). Overall, the results show that crop residue return increases crop yields by 5.0% relative to crops grown without it. The greatest increases in yield for crops grown with returned residue were associated with average annual temperatures < 10˚C (yield increase = 7.6%), rainfall � 800 mm (9.5%), plowing depth � 20 cm (6.5%), corn crops (8.0%), growth of a single crop per year (10.1%), no irrigation (11.9%), nitrogen (N), and potassium (K) fertilization (20.0%), and low nitrogen application rates of 0-100 kg N ha-1 (10.8%). The effects of crop residue return on crop yields were found to vary according to the following soil properties: organic matter content � 15 g kg-1 (yield increase = 9.4%), available nitrogen content � 100 mg kg-1 (10.3%), and pH � 6.5 (11.2%). The greatest magnitudes of increase in WUE associated with crop residue return were associated with corn (yield increase = 13.7%), medium nitrogen content (100-150 kg ha-1 ; 23.3%), high soil organic matter (� 15 g kg-1 ; 25.5%) and low air temperatures (< 10˚C; 19.9%). In addition, our results suggest that crop residue return might be most effective in increasing crop yields and WUE in corn crops, crops with a tillage depth � 20 cm, crops grown with moderate nitrogen fertilization (0-150 kg ha-1), growth of a single crop per year, high soil organic matter content (� 15 g kg-1), and cold conditions (< 10˚C). Overall, the results of this meta-analysis suggest that crop residue return can increase crop yields and WUE, with the relationship being mainly affected by climatic conditions, plowing depth, fertilization management, crop types, and soil properties.

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Section: Introductionmentioning

confidence: 99%

A meta-analysis of the effects of crop residue return on crop yields and water use efficiency

Lü

2020

PLoS ONE

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“…SOC accumulation and sequestration in agro-ecosystems rely on the C input from crop straw (shoot, root, and root exudates) and C output from SOC mineralization by soil microbes [4]. In the past, crop straw was widely used for soil amendment, cooking and heating, animal feed, and biofuels; among all these uses, straw returning is considered to be one of the best practices environmentally [5]. Crop straw not only provides a source of fresh organic matter, but also increases crop yield [6].…”

Section: Introductionmentioning

confidence: 99%

Effects of Straw Return Mode on Soil Aggregates and Associated Carbon in the North China Plain

Kan

et al. 2020

Agronomy

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Crop straw is widely used to manage soil organic carbon (SOC) sequestration as an environmentally friendly practice in the North China Plain. However, little is known about the effects of straw returning modes on SOC sequestration in this region. Thus, a field experiment was conducted to study SOC accumulation and mineralization as well as aggregate stability and aggregate-associated SOC for the following three straw returning modes: no straw returning (NSR), only wheat straw returning (WR), and both wheat and maize straw returning (WR-MR). SOC concentration and storage were higher for WR and WR-MR than for NSR in the 0–20 cm soil layer, respectively (p < 0.05). Although WR and WR-MR resulted in higher mineralization per unit of soil than NSR, no significant difference in mineralization per unit of soil carbon was observed among straw returning modes in the upper soil layer. The mean weight diameters of aggregates at 0–5 cm were higher under treatments with crop retention than under NSR. At this soil depth, the aggregate-associated C concentration and stock for each soil size were significantly decreased by NSR. These findings suggest that WR-MR and WR are effective residue management practices. In particular, WR is the optimal strategy to enhance SOC sequestration, considering other applications of straw (e.g., forage, fuel, or biomass).

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“…Residue retention is an effective management technique to enhance SOM content and improve soil nutrient availability [12,54,55] However, the climate in Northeast China is characterized by an extremely long and cold winter [33]. Therefore, the residue buried in soil after harvest in mid October had difficulty decomposing during the winter, owing to the deficiency of water and heat [8].…”

Section: Effects Of Residue Management On Soil Bacterial and Fungal Cmentioning

confidence: 99%

“…Residue retention is an effective strategy for recycling crop residues and a beneficial practice to improve soil fertility and crop productivity [10]. Numerous studies have proven that residue retention not only increases the soil carbon stock [11] but also improves the water-holding capacity of the soil [12]. However, adverse effects of no tillage practices or residue retention have sometimes been reported depending on cropping practices, land use types and adoption years [12,13] As critical soil components, microorganisms play key roles in soil nutrient biogeochemical cycling, substantially contributing to soil structure and maintaining ecosystem functions [14,15].…”

mentioning

confidence: 99%

“…Numerous studies have proven that residue retention not only increases the soil carbon stock [11] but also improves the water-holding capacity of the soil [12]. However, adverse effects of no tillage practices or residue retention have sometimes been reported depending on cropping practices, land use types and adoption years [12,13] As critical soil components, microorganisms play key roles in soil nutrient biogeochemical cycling, substantially contributing to soil structure and maintaining ecosystem functions [14,15]. There is an increasing body of research that shows that both tillage practices and residue management influenced soil microbial communities in various agroecosystems [16][17][18][19], primarily owing to the alteration of soil physiochemical characteristics.…”

mentioning

confidence: 99%

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Tillage practices and residue management manipulate soil bacterial and fungal assembly and co-occurrence network patterns in maize agroecosystem

Yang

Guan

Zhai

et al. 2020

Preprint

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Background: Tillage practices and residue management are highly important agricultural practices. However, very few studies have examined the influence of tillage practices and residue management on both bacterial and fungal communities and network patterns in consecutive years. Results: We examined the effects of different tillage practices, including no tillage, rotary tillage, and deep tillage, on the soil bacterial and fungal communities and co-occurrence networks following residue removal and residue retention in 2017 and 2018. This study showed that both bacterial and fungal communities were unaffected by tillage practices in 2017, but they were significantly influenced in 2018. In addition, soil fungal operational taxonomic unit (OTU) richness was significantly enhanced by deep tillage compared with no tillage in 2018, while bacterial OTU richness was unaffected in either year. Tillage practices had differing effects on the soil microbial network patterns, with rotary and deep tillage increasing the complexity of bacterial networks but simplifying fungal networks. However, residue retention only induced a shift in the fungal community in 2018 without an obvious effect in the bacterial community in both years. In addition, residue retention simplified soil bacterial and fungal networks in 2018. Conclusions: This study highlighted the dissimilar responses of bacterial and fungal networks to tillage practices and emphasized that tillage practice is more important than residue management in shaping soil microbial communities.

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Sustaining crop production in China's cropland by crop residue retention: A meta‐analysis

Cited by 123 publications

References 86 publications

A meta-analysis of the effects of crop residue return on crop yields and water use efficiency

A meta-analysis of the effects of crop residue return on crop yields and water use efficiency

Effects of Straw Return Mode on Soil Aggregates and Associated Carbon in the North China Plain

Tillage practices and residue management manipulate soil bacterial and fungal assembly and co-occurrence network patterns in maize agroecosystem

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