Environmental benefits and farmers' adoption of winter cover crops in the North China Plain

Guo, Shengli; ZHANG, Yitao; Zhai, Limei; Jian, Liu; WANG, Hongyuan; LIU, Hongbin

doi:10.1016/j.pedsph.2023.03.011

Cited by 3 publications

(2 citation statements)

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“…While the promotion of green manure crops has gained significant attention in China in recent years [34], understanding the factors influencing the adoption of farming practices is crucial for effectively promoting green manure cropping among farmers and harnessing the conservation and ecosystem service benefits it provides. Among the numerous influencing factors, the availability and amount of financial incentives were found to have the strongest impact, accounting for 83.9%, followed by investment in cover crops [43]. In our study, compared to the conventional wheat-maize-sunflower rotation without green manure, the increased costs associated with green-manure-inclusive diversified rotation were mainly attributed to green manure seeds and field management practices such as sowing and tillage.…”

Section: Effect Of Green Manure Inclusive Diversified Rotation On Eco...mentioning

confidence: 58%

Limited Advantages of Green Manure Planting on Soil Nutrients and Productivity in Intensive Agriculture: A Case Study of Wheat–Maize–Sunflower Rotation in Hetao Irrigation District

Zhao,

Zhang,

et al. 2023

Agronomy

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Crop diversification has been proposed as a promising strategy for transitioning towards sustainable agricultural systems. The Hetao Irrigation District faces multiple challenges in ensuring food security and farmer livelihood. A diversified green manure inclusive cropping system was designed to evaluate the influences of hairy vetch (Vicia villosa Roth) incorporation on soil nutrients, yield, and economic benefit compared to the existing wheat–maize–sunflower rotation system in the Hetao Irrigation District. The specific method was as follows: spring wheat (Triticum-durum L.)–vetch rotation in the first year, maize (Zea mays L.)/vetch intercropping in the second year, and sunflower (Helianthus annuus L.)/vetch relay intercropping in the third year. Over a 6-year experimental observation, green manure incorporation significantly increased soil alkaline hydrolyzed nitrogen and exchangeable potassium levels. Although the effect of green manure incorporation on the yield of rotated spring wheat and intercropped maize was not prominent, it improved sunflower yield in the second rotation cycle by 11%. Consequently, only the sunflower led to an increase in income of 235 CNY ha−1 in the second rotation cycle. This indicates that the soil-property-building and yield-enhancing effects of green manure incorporation require time to accumulate. However, the benefits derived from increased yield were not sufficient to offset the production costs associated with green manure cultivation, resulting in less-than-desirable economic returns.

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Section: Effect Of Green Manure Inclusive Diversified Rotation On Eco...mentioning

confidence: 58%

Limited Advantages of Green Manure Planting on Soil Nutrients and Productivity in Intensive Agriculture: A Case Study of Wheat–Maize–Sunflower Rotation in Hetao Irrigation District

Zhao,

Zhang,

et al. 2023

Agronomy

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“…The successful northward migration of winter rapeseed, which represents the only winter oil seed crop, has provided economic benefits in the north ( Ma et al., 2019b ). Moreover, the plant has been utilized as a winter cover crop, which can effectively increase vegetation coverage in winter and spring, improve the multiple cropping index and land utilization rate, reduce soil wind erosion, increase organic matter content, protect farmlands, promote balanced development between local economic production, and achieve ecological and environmental protection( Guo et al., 2023 ).…”

Section: Introductionmentioning

confidence: 99%

Cloning and functional analysis of the BrCUC2 gene in Brassica rapa L

Tao,

Zhao,

et al. 2023

Front. Plant Sci.

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The CUP-SHAPED COTYLEDON2 (CUC2) gene plays an important role in the formation of apical meristem and organ edges in plants. The apical meristematic tissue of Brassica rapa (B. rapa) is associated with cold resistance, however, the role of the CUC2 gene in cold resistance of B.rapa is unclear. In this study, we used bioinformatics software to analyze the structure of BrCUC2 gene, real-time fluorescence quantitative PCR to detect the expression level of BrCUC2, constructed transgenic Arabidopsis thaliana by the flower dipping method and subcellular localization for functional validation. The results showed that, we isolated a 1104 bp open reading frame of BrCUC2 from the winter B. rapa cultivar ‘Longyou 7’. The BrCUC2 contains a highly conserved domain belonging to the NAM superfamily. Its homologus CUC genes contain similar conserved motifs and are closely related to Brassica oleracea (B.oleracea), and the N-terminal of amino acid sequence contains NAC domain. BrCUC2 protein was localized in the nucleus and self-activation tests showed that pGBKT7-BrCUC2 had self-activation. Tissue-specific expression analysis and promoter β-Glucuronidase (GUS) activity showed that BrCUC2 had high expression levels in B. rapa growth points and A. thaliana leaf edges, stems and growth points. After low-temperature stress, BrCUC2 showed greater expression in ‘Longyou 7,’ which presents strong cold resistance and concave growth points, than in ‘Longyou 99,’ which presents weak cold resistance and protruding growth points. BrCUC2 promoter contains multiple elements related to stress responses. BrCUC2 overexpression revealed that the phenotype did not differ from that of the wild type during the seedling stage but showed weak growth and a dwarf phenotype during the flowering and mature stages. After low-temperature treatment, the physiological indexes and survival rate of BrCUC2-overexpression lines of Arabidopsis thaliana (A. thaliana) were better than those of the wild type within 12 h, although differences were not observed after 24 h. These results showed that BrCUC2 improved the low-temperature tolerance of transgenic A. thaliana within a short time. It can provide a foundation for the study of cold resistance in winter B. rapa.

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