BACKGROUND Sustainable greenhouse tomato production requires optimal fertilizer management to achieve the double-win strategy of producing high yields and maximizing profits with less environmental pollution. The objective of this study was to seek an optimal fertilization strategy maintaining high productivity of greenhouse tomato, improving nitrogen use efficiency and reducing nitrate leaching risk. RESULTS The combined application of soluble organic and chemical fertilizers for topdressing (SOSC) not only produced more fruit yield (75.18 Mg ha-1 ) and plant dry matter (10 449.12 kg ha-1 ), but also enhanced plant nutrients uptake, nitrogen recovery efficiency (39.22%), nitrogen agronomic efficiency (176.78 kg kg-1 ), soluble solids, vitamin C and lycopene content in tomato fruits compared with the other treatments, i.e. chicken manures for basal application and chemical fertilizer for topdressing (CC), soluble organic fertilizer for topdressing (SO) and soluble chemical fertilizer for topdressing (SC). In terms of soil nutrients residue, SOSC had no obvious NO3 - -N accumulation area in the 0-60 cm soil layer, unlike large accumulation in the soil layer below 30 cm in SO and SC. CONCLUSION The combined application of soluble organic and chemical fertilizers is highly recommended to sustain fruit yield, improve nitrogen use efficiency and reduce soil degradation risks in commercial greenhouse tomato production. This article is protected by copyright. All rights reserved.

中文翻译：

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可溶性有机肥与化肥配施滴灌提高氮素利用效率，提高番茄产量和品质

背景技术可持续温室番茄生产需要优化施肥管理，以实现产量高、利润最大化、环境污染少的双赢战略。本研究的目的是寻求一种最佳施肥策略，以保持温室番茄的高生产力，提高氮利用效率并降低硝酸盐浸出风险。结果 追施可溶性有机肥（SOSC）不仅提高了果实产量（75.18 Mg ha-1 ）和植物干物质（10 449.12 kg ha-1 ），而且提高了植物养分吸收和氮素回收率与其他处理相比，番茄果实中的效率（39.22％），氮农艺效率（176.78 kg kg-1 ），可溶性固形物，维生素C和番茄红素含量，即 基施鸡粪和追施化肥（CC）、追施可溶性有机肥（SO）和追施可溶性化肥（SC）。在土壤养分残留方面，SOSC在0-60 cm土层没有明显的NO3 - -N积累区，不像SO和SC在30 cm以下土层大量积累。结论在商业温室番茄生产中，强烈建议可溶性有机肥和化肥联合施用，以维持果实产量，提高氮素利用效率并降低土壤退化风险。本文受版权保护。版权所有。SOSC在0-60 cm土层没有明显的NO3 - -N积累区，不像SO和SC在30 cm以下土层大量积累。结论在商业温室番茄生产中，强烈建议可溶性有机肥和化肥联合施用，以维持果实产量，提高氮素利用效率并降低土壤退化风险。本文受版权保护。版权所有。SOSC在0-60 cm土层没有明显的NO3 - -N积累区，不像SO和SC在30 cm以下土层大量积累。结论在商业温室番茄生产中，强烈建议可溶性有机肥和化肥联合施用，以维持果实产量，提高氮素利用效率并降低土壤退化风险。本文受版权保护。版权所有。