Cite this article: | 马军勇,郑国玉,周建伟,等.不同灌水下限对枣树光合特性、产量及品质的影响[J].灌溉排水学报,0,(1):-. |
| Ma Junyong,Zheng Guoyu,Zhou Jianwei,et al.不同灌水下限对枣树光合特性、产量及品质的影响[J].灌溉排水学报,0,(1):-. |
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DOI: |
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Effects of different irrigation threshold on photosynthetic characteristics, yield and quality of jujube trees |
Ma Junyong1,2, Zheng Guoyu1,2, Zhou Jianwei1,2, Liu Zhipeng3
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1.Xinjiang academy of agricultural and reclamation science;2.Shihezi Experimental Station for Crop Water Use of Ministry of Agriculture;3.College of Agricultural Engineering,Hohai University
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Abstract: |
【Objective】In order to explore the effect of suitable irrigation threshold under drip irrigation on the growth of jujube which is located in desert oasis.【Method】The field experiment was setted up 4 drip irrigation threshold T1, T2, T3 and T4( which were 40%, 55%, 70%, 85% of the field capacity, respectively). The effects ofdifferent irrigation threshold on photosynthetic characteristics, yield and fruit quality of jujube at different growth stages were analyzed.【Result】The lower irrigation threshold reduced the net photosynthetic rate, transpiration rate and stomatal conductance, but increased the leaf water use efficiency of jujube. In addition, the net photosynthetic rate of T3 was the highest, and the leaf water use efficiency of T2 was the highest at different stages of jujube..With the decrease of the irrigation threshold, the quality indexes such as total sugar, soluble solids and sugar-acid ratio were improved. When theirrigation threshold is 55% of the field capacity, the single fruit weight and yield of jujube trees was the highest, which was 4.43g and 6832.9 kg·hm-2, respectively.【Conclusion】Considering the photosynthetic characteristics, yield and quality of jujube, when the irrigation threshold is 55% of the field capacity, the leaf water use efficiency of is significantly improved, and the yield and quality are better. |
Key words: Net photosynthetic rate; Stomatal conductance; Transpiration rate; Sugar-acid ratio; Field capacity |
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