| Effects of different water and fertilizer on irrigation amount, yield and fruit quality of tomato with low pressure of node subsurface irrigation in protected field |
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| DOI：10.7606/j.issn.1000-7601.2010.01.10 |
| Key Words: protected field low pressure of node subsurface irrigation irrigation upper limit fertilization amount tomato yield quality |
| Author Name | Affiliation | | CHEN Jingli | College of Land and Environmental Sciences, Shenyang Agricultural University, Key Laboratory of Northeastern Soil and Environment of Ministry of Agriculture，Liaoning Key Laboratory of Agricultural Resources and Environment | | ZHANG Yulong | College of Land and Environmental Sciences, Shenyang Agricultural University, Key Laboratory of Northeastern Soil and Environment of Ministry of Agriculture，Liaoning Key Laboratory of Agricultural Resources and Environment | | WANG Tieliang | College of Water Resources，Shenyang Agricultural University, Shenyang, 110161, China | | ZOU Hongtao | College of Land and Environmental Sciences, Shenyang Agricultural University, Key Laboratory of Northeastern Soil and Environment of Ministry of Agriculture，Liaoning Key Laboratory of Agricultural Resources and Environment | | Li Bo | College of Water Resources，Shenyang Agricultural University, Shenyang, 110161, China | | YU Na | College of Land and Environmental Sciences, Shenyang Agricultural University, Key Laboratory of Northeastern Soil and Environment of Ministry of Agriculture，Liaoning Key Laboratory of Agricultural Resources and Environment |
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| Abstract: |
| The coupling effects of the irrigation upper limit and fertilization amount on irrigation amount, yield and fruit quality of tomat
o were studied by means of 2-factor 3-level full combination experiment design under the condition of low pressure of node subsurface irrigation in protected field. The results indicated that the ineffective wastage of water could be reduced by increasing the irrigation upper limit, which further influenced the water use efficiency of tomato. The effect of fertilization amount on the tomato yield was the maximal, and the interaction of the irrigation upper limit and fertilization amount was the second factor, while the effect of the irrigation upper limit was minimal. The Vitamin C content, soluble sugar content and sugar-acid ratio of tomato all decreased by using plentiful irrigation in the same fertilization. The different fertilization amount could merely affect the sugaracid ratio of tomato significantly. By comprehensive consideration of water saving, increasing yield and fruit quality, when the fertilization amount was pure N 75.0 kg／hm2, pure K2O 75.0 kg／hm2, soil water suction of the irrigation upper limit and lower limit were respectively 15.8 kPa and 30.0 kPa, the yield of tomato was the highest and the fruit quality was preferable. |
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