| Cite this article: | 张新燕,牛文全.不同水氮供应模式对设施番茄生长及产量的影响[J].灌溉排水学报,0,():-. |
| ZHANG Xinyan,NIU Wenquan.不同水氮供应模式对设施番茄生长及产量的影响[J].灌溉排水学报,0,():-. |
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| DOI： |
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| Effects of Water and N-Fertilization Supply on Growth and Yield of Tomato in Greenhouse |
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ZHANG Xinyan1, NIU Wenquan2
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1.College of Water Resources and Architectural Engineering,Northwest A F University,Yangling,Shaanxi;2.Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas,Ministry of Education,Northwest A F University,Yangling,Shaanxi
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| Abstract: |
| 【Objective】The model and design method of drip fertigation system of tomato in greenhouse were explored. 【Method】 The experiment of drip fertigation was carried out in the dry-land greenhouse. The experiments were conducted with three factors of drip layouts, irrigation and nitrogen, in which drip layouts including lateral line per row (T1), one lateral line between two plant rows (T2), one lateral line between three plant rows (T3); three irrigation levels (W1: 50% ET0, W2:70%ET0, W3:90% ET0) and three nitrogen levels (N1:120 kg/hm2, N2:180 kg/hm2, N3:240 kg/hm2). The response of tomato growth and yield to water and N-fertilization supply was studied.【Result】The plant height and stem diameter increased with the increase of irrigation water and N-fertilization, and the effect of irrigation was obviously greater than that of fertilization. The influence of different water and N-fertilization mode on them increased with the tomato growing. The maximum differences ofthe leaf area index LAI show between treatments at the early tomato fruiting period. The effects of different irrigation and N-fertilization modes on photosynthesis increased with the increase of irrigation and N-fertilizer application. Nitrogen fertilizer had the greatest influence on the chlorophyll SPAD concentration of tomato in greenhouse, followed by irrigation. Appropriate irrigation and N-fertilization were beneficial to the improvement of chlorophyll SPAD value, while too high or too low would affect its improvement. The effects of different irrigation amount and N-fertilizer application amount on tomato yield were significantly different, and the irrigation factor was greater than the N-fertilization. The influence of different drip layouts is minimal, and no significant difference is achieved. 【Conclusion】Under the existing experimental conditions, the optimal drip fertigation mode was T2 (one lateral line between two plant rows), W2 (70%ET0), N3 (N240 kg?hm-2), the best growth of tomato and the highest yield (107104.0 kg/m2). |
| Key words: tomato in greenhouse; drip fertigation; growth indicators; physiological indexes; yield |
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