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| DOI：10.13522/j.cnki.ggps.2017.0394 |
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| Impact of Fertilization and Top-addressing on Yield and Quality of Solar Greenhouse Cucumber under Trae Irrigation |
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WANG Xiao, YANG Peiling, HUANG Lingmiao
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College of Water Conservancy and Civil Engineering, China Agricultural University, Beijing 100083, China
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| Abstract: |
| 【Objective】The objective of this paper is to explore the most suitable fertilization and top-addressing schedule for solar greenhouse cucumbers under trace irrigation.【Method】We investigated three total fertilizer applications: high, moderate and low fertilization; and three base fertilization to top dressing ratios: K=0,1/3 and 1 respectively; overall, there were nine treatments. In each treatment, we measured the yield and quality of the cucumber using the controlled test method.【Result】① K=1/3 was beneficial to the yield when the amount of applied fertilizer was the same; when K was the same, the yield increased with fertilization and topdressing. ② When K was the same, the soluble total sugar and Vc content in the fruits increased first and then decreased while the nitrate content increased monotonically, as nitrogen fertilization increased. The content of soluble sugar, soluble solids and Vc in the fruits peaked in treatment T5 and was significantly higher than that under high fertilization treatment (T8). The amount of nitrate in the fruits peaked in the high-fertilizer application (T8). When K=1/3, the contents of soluble sugar, soluble solids reduced, and Vc and nitrate accumulation in the fruit were higher than that when K=1.【Conclusion】Moderate fertilization with the base fertilizer to top dressing ratio kept at 1/3 is most suitable for trace-irrigate solar greenhouse cucumber. |
| Key words: solar greenhouse; cucumber; trace irrigation; fertilization system |
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