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Sustainable Fertilization in Double-Cropping Vegetable System: Evidence from A 5-Year Tomato–Brassica Campestris Field Experiment
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DOI：10.1007/s42729-026-03498-w.png)
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Abstract
En 中文
Bio-organic substitution for chemical fertilizer, as one of the most widely applied agricultural management measures, plays a crucial role in increasing crop productivity and reducing soil greenhouse gas (GHG) emissions. Nevertheless, the effects of combined chemical and bio-organic fertilization on GHG emissions and crop productivity in rotation systems remain unclear, particularly in cases where no fertilization is applied during the second crop season. Herein, we conducted a 5-year field study in a tomato–Brassica campestris (B. campestris) rotation system to evaluate four fertilization treatments (CK (no fertilizer), CF (chemical fertilizer), OF (bio-organic fertilizer), and COF (chemical plus bio-organic fertilizer)) on crop productivity and GHG emissions during the B. campestris season. The COF treatment resulted in the highest B. campestris yield and net economic benefit. Applications involving bio-organic fertilizer significantly enhanced quality, photosynthesis, and chlorophyll contents of B. campestris. Moreover, the COF treatment reduced cumulative CO2 (16.3%), CH4 (24.8%), and N2O (58.9%) emissions, showing the lowest global warming potential and GHG integrated index. Within the tomato–B. campestris rotation system, the COF treatment promoted the accumulation of total nutrient contents while reducing excessive available nutrient contents. These results suggest that fertilizing only during the tomato season in the tomato–B. campestris rotation system contributed to lower soil GHG emissions and reduced surplus nutrient accumulation, providing an environmentally friendly, high-yield, and high-quality fertilization model for vegetable cultivation system.
Keywords:
Greenhouse Gas Emissions
Bio-Organic Fertilizer
Crop Yield
Tomato–Brassica Campestris Rotation System
Vegetable Production System
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