Integrated Crop-Nitrogen Management Improves Tomato Yield and Root Architecture and Minimizes Soil Residual N

文献类型： 外文期刊

第一作者： Li, Changqing

作者： Li, Changqing;Li, Yahao;Cui, Dongyu;Li, Yanmei;Zou, Guoyuan;Yang, Jungang;Li, Changqing;Li, Yahao;Wang, Jiqing;Thompson, Rodney

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关键词： greenhouse tomato; cultivation of east-west planting; slow and controlled-release fertilizer; root architecture

期刊名称：AGRONOMY-BASEL （ 影响因子：3.949； 五年影响因子：4.117 ）

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年卷期： 2022 年 12 卷 7 期

页码：

收录情况： SCI

摘要： Sustainable intensification of protected vegetable crops entails increasing yield while reducing environmental impact and labor input. To explore a comprehensive strategy for high yielding, highly efficient and high quality production of greenhouse tomato (Solanum lycopersicum L.), an integrated crop-nitrogen management (ICNM) strategy was compared to farmers' traditional management (TM) in a field experiment in a solar greenhouse. A split-plot block design was used. The main factor was the management strategy of ICNM and TM. The secondary factor was four different basal fertilizer treatments, being a control (CK; 0 kg N ha(-1)), carbon-based urea (BU; 100 kg N ha(-1)), controlled release urea (CU; 100 kg N ha(-1)), and conventional compound fertilizer (CF; 100 kg N ha(-1)). An additional 200 kg N ha(-1 )through drip irrigation as topdressing was used. Tomato fruit yield, N uptake, and N partial productivity with ICNM were significantly higher than with TM, increasing by 32.1%, 39.7%, and 31.1%, respectively. The proportion of fine roots was increased in ICNM, and the average diameter of roots decreased by 10.7% compared to TM. There was a significant negative correlation between mean root diameter and N uptake. In conclusion, the ICNM strategy was beneficial to form a good root system configuration, promote the development of shoot biological potential, increase tomato yield, maintain fruit quality, increase N uptake, and reduce environmental risks.

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