| 廖凯,范兴科.黄瓜初花期适宜灌溉控制指标研究[J].干旱地区农业研究,2011,29(3):48~52 |
| 黄瓜初花期适宜灌溉控制指标研究 |
| Study on appropriate irrigation controling index for cucumber during initial bloom stage |
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| DOI：10.7606/j.issn.1000-7601.2011.03.09 |
| 中文关键词: 黄瓜 初花期 灌溉下限 水分利用效率 品质 |
| 英文关键词:cucumber initial bloom stage irrigation minimum water use efficiency fruit quality |
| 基金项目:国家高技术研究发展计划(2006AA100208) |
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| 中文摘要: |
| 采用盆栽试验,通过控制不同灌溉下限,研究了黄瓜初花期的不同土壤水分状况对其植株生理指标、形态指标、产量、品质和水分利用效率的影响。结果表明:初花期和盛瓜期各光合参数(光合速率、气孔导度、蒸腾速率)的日变化为单峰曲线,初瓜期各光合参数的日变化为双峰曲线。气孔导度和蒸腾速率均与光合速率基本呈现相同的变化规律。不同土壤水分状况对黄瓜后期的生理、形态、产量、品质和水分利用效率有明显影响,当灌溉控制下限在田间持水量的55%~75%之间时,随着灌溉下限的降低,单瓜重和瓜长增加,单株产量和水分利用效率有逐渐提高的趋势。灌溉控制下限为55%田间持水量时,光合参数较高,形态指标相对较好,最终的产量、品质和水分利用效率最高,55%的田间持水量为适宜的灌溉控制下限。 |
| 英文摘要: |
| Physiological indexes， morphological indexes， yield, fruit quality and water use efficiency of cucumber
were studied under different soil irrigation minimums during initial bloom stage in pot experiment. The results showed: the diurnal course of physiological indexes of cucumber was displayed in single peak pattern curves in initial fruit stage and mid-fruit stage，while the diurnal course of physiological indexes of cucumber was displayed in a two-peak pattern curve in early fruit stage. Stomatal conductance, transpiration rate and net photosynthetic rate showed the same variation. The effect of different soil moisture on physiological indexes , morphological indexes, yield, fruit quality and water use ef-ficiency was significant during early fruit stage and mid fruit stage. Fruit weight，fruit length, yield and water use effi-ciency were gradually increasing with the irigation minimums reducing from 75% field water capacity to 55% field water capacity. The treatment with irrigation minimum of 55% field water capacity could get not only higher photosynthetic pa-rameters and morphological indexes but also the best yield, fruit quality and water use efficiency. |
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