Optimizing nitrogen and water management for sustainable greenhouse vegetable production with less greenhouse gas emissions

Zhou, Peng; Bai, Xinlu; Wang, Haoying; Yang, Mingxia; Bao, Lei; Deng, Xin; Chen, Zhujun; Zhou, Jianbin

doi:10.1016/j.agee.2023.108529

Cited by 9 publications

(5 citation statements)

References 63 publications

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“…The N 2 O in soil originate from the microbial nitrification processes under aerobic conditions and the denitrification processes under anaerobic conditions [ 32 ]. The N 2 O emissions are affected by soil inorganic N content, soil temperature and water filled pore space (WFPS) [ 33 , 34 ]. In general, vegetable soils with high chemical N fertilizer inputs and frequent irrigation are major sources of N 2 O [ 11 , 34 , 35 ].…”

Section: Discussionmentioning

confidence: 99%

“…The N 2 O emissions are affected by soil inorganic N content, soil temperature and water filled pore space (WFPS) [ 33 , 34 ]. In general, vegetable soils with high chemical N fertilizer inputs and frequent irrigation are major sources of N 2 O [ 11 , 34 , 35 ]. Wang et al [ 31 ] conducted a meta-analysis focused on Chinese vegetable production systems and found that N 2 O emissions had a positively linear correlation with fertilizer N application rates.…”

Section: Discussionmentioning

confidence: 99%

“…Our study found that frequent irrigation and precipitation during the two lettuce seasons (May and June in spring and August and September in autumn) resulted in high soil WFPS (50–73%) and temperature (mean: 13.28–24.58 °C) ( Table S1 ). This was beneficial to N 2 O generation, which was mostly produced via denitrification and oxidizer-denitrification [ 30 , 34 ]. The N 2 O fluxes during the seedling stage in autumn were higher than those in the spring season ( Figure 1 ), due to higher soil temperature and moisture during the seedling stage in autumn and the stimulated soil microbial activity involved in the N cycle, subsequently promoting soil N 2 O production [ 35 ].…”

Section: Discussionmentioning

confidence: 99%

“…Similar to previous studies, our results also showed that CRU simultaneously improved lettuce yield and net yield compared with conventional urea at the same N rate. In contrast to CRU, urea dissolved rapidly into the soil after fertilization, resulting in the loss of a large amount of N that failed to be absorbed by plants in time, and making it difficult for plants to absorb sufficient N for growth at the middle and late growth stages, thus decreasing lettuce yield and N use efficiency [ 34 ]. The CRU may synchronize N release with crop demand compared to traditional fertilizers [ 4 ] and can better meet the crop nutrient requirements and improve plant N uptake ( Figure 6 ), contributing greatly to lettuce N accumulation and yield [ 61 ].…”

Section: Discussionmentioning

confidence: 99%

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Effects of Long-Term Controlled-Release Urea on Soil Greenhouse Gas Emissions in an Open-Field Lettuce System

Wang,

Cao,

Zhou

et al. 2024

Plants

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Controlled-release urea (CRU) fertilizers are widely used in agricultural production to reduce conventional nitrogen (N) fertilization-induced agricultural greenhouse gas emissions (GHGs) and improve N use efficiency (NUE). However, the long-term effects of different CRU fertilizers on GHGs and crop yields in vegetable fields remain relatively unexplored. This study investigated the variations in GHG emissions at four growth stages of lettuce in the spring and autumn seasons based on a five-year field experiment in the North China Plain. Four treatments were setup: CK (without N application), U (conventional urea—N application), ON (20% reduction in urea—N application), CRU (20% reduction in polyurethane-coated urea without topdressing), and DCRU (20% reduction in polyurethane-coated urea containing dicyandiamide [DCD] without topdressing). The results show that N application treatments significantly increased the GHG emissions and the lettuce yield and net yield, and DCRU exhibited the lowest N2O and CO2 emissions, the highest lettuce yield and net yield, and the highest lettuce N content of the N application treatments. When compared to U, the N2O emission peak under CRU and DCRU treatments was notably decreased and delayed, and their average N2O emission fluxes were significantly reduced by 10.20–20.72% and 17.51–29.35%, respectively, leading to a significant reduction in mean cumulative N2O emissions during the 2017–2021 period. When compared to U, the CO2 fluxes of DCRU significantly decreased by 8.0–16.54% in the seedling period, and mean cumulative CO2 emission decreased by 9.28%. Moreover, compared to U, the global warming potential (GWP) and greenhouse gas intensity (GHGI) of the DCRU treatment was significantly alleviated by 9.02–17.13% and 16.68–20.36%, respectively. Compared to U, the N content of lettuce under DCRU was significantly increased by 6.48–17.25%, and the lettuce net yield was also significantly increased by 5.41–7.71%. These observations indicated that the simple and efficient N management strategy to strike a balance between enhancing lettuce yields and reduce GHG emissions in open-field lettuce fields could be obtained by applying controlled-release urea containing DCD without topdressing.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Effects of Long-Term Controlled-Release Urea on Soil Greenhouse Gas Emissions in an Open-Field Lettuce System

Wang,

Cao,

Zhou

et al. 2024

Plants

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“…China is the largest vegetable producer globally [1], and the vegetable planting area in plastic sheds has reached 2.85 million hectares by 2023, accounting for 81% of total vegetable production (National Bureau of Statistics, 2023). Jiangsu Province is located in the middle and lower reaches of the Yangtze River, with an optimal climate, and the facility vegetable production area of Jiangsu province accounts for more than 20%, ranking the first in the country [2].…”

Section: Introductionmentioning

confidence: 99%

Optimized Fertilization Shifted Soil Microbial Properties and Improved Vegetable Growth in Facility Soils with Obstacles

Lang,

Ma,

Wang

et al. 2023

Horticulturae

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Currently, facility cultivation produces almost a third of all vegetables in China. The intensive production style has led to serious soil problems that need to be tackled. In this paper, a pot experiment was set up to evaluate the effects of optimized fertilization on vegetable growth and soil properties. Specifically, calcium, magnesium, boron and molybdenum were added on the basis of soil testing. The results showed that the growth of Chinese cabbage was significantly increased by optimized fertilization. The soil pH increased (by 3.82%), and EC decreased (by 8.54%). The abundance of culturable bacteria increased by 33.86%, whereas that of fungi decreased by 70.7%. The optimized fertilization increased the richness but not the evenness of soil microorganisms, increased the relative abundance of Proteobacteria, Firmicutes, Bacillus and Bacteroidetes, and decreased the relative abundance of Actinobacteria, Chloroflexi, and superphyla. Optimized fertilization inhibited the growth of Chytridiomycota and Mortierellomycota, especially the plant pathogen Fusarium. Moreover, balanced fertilization was beneficial in promoting various metabolic processes of soil bacteria. Soil water-soluble Ca, Mg, and available Mo might be the main factors driving the change in microbial groups.

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Optimizing water‐nitrogen regulation for enhanced carbon absorption and reduced greenhouse gas emissions in greenhouse tomato cultivation

Zhao,

Yu,

Ding

et al. 2024

Env Prog and Sustain Energy

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To study the impact of different water‐nitrogen regulation modes on the carbon cycle of greenhouse tomatoes and determine optimal irrigation and nitrogen application levels to enhance carbon absorption and minimize greenhouse gas emissions. This study employed three irrigation levels (100%, 80%, and 60% of ET0) and three nitrogen application levels (240, 192, and 144 kg·ha−1), along with a control group (W1N1, i.e., 100% ET0‐240 kg·ha−1). Gas‐chromatography methods were used to monitor CH4 and soil CO2 emissions, while assessing dry matter, carbon content, and carbon fixation capacity of tomato organs throughout the growth period. Additionally, a system for evaluating the net ecosystem carbon budget of facility tomatoes was developed based on net primary productivity. Results indicated reduced CH4 and soil CO2 emissions with decreased irrigation and nitrogen application. Dry matter, carbon content, and carbon fixation of tomato organs initially increased with reduced nitrogen and irrigation but then declined. The W2N2 (80% ET0‐192 kg·ha−1) treatment showed maximal values for dry matter, carbon content, carbon fixation, net primary productivity (NPP), and gross primary productivity (GPP). Findings suggest a positive net ecosystem carbon budget under reduced water and nitrogen conditions, indicating carbon absorption. Specifically, the W2N2 treatment outperformed others in net carbon absorption, highlighting its potential as an effective mode for enhancing carbon sequestration in the region.

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Optimizing nitrogen and water management for sustainable greenhouse vegetable production with less greenhouse gas emissions

Cited by 9 publications

References 63 publications

Effects of Long-Term Controlled-Release Urea on Soil Greenhouse Gas Emissions in an Open-Field Lettuce System

Effects of Long-Term Controlled-Release Urea on Soil Greenhouse Gas Emissions in an Open-Field Lettuce System

Optimized Fertilization Shifted Soil Microbial Properties and Improved Vegetable Growth in Facility Soils with Obstacles

Optimizing water‐nitrogen regulation for enhanced carbon absorption and reduced greenhouse gas emissions in greenhouse tomato cultivation

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