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| DOI：10.13522/j.cnki.ggps.2017.0168 |
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| Improving the Yield and Quality of Grape in Turpan-nami Basin via Controlling Its Micro-spray Sprinkler Irrigation |
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ZHANG Heng, BAI Yungang, LEI Xiaoyun, LIU Hongbo, DING Ping
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Xinjiang Agricultural University, Urumqi 830052, China; Xinjiang Institute of Water Conservancy and Hydropower Sciences, Urumqi 830049, China
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| Abstract: |
| 【Objective】 Soil moisture and humidity affect plant physiology and the purpose of this paper is to investigate the feasibility of improving the yield and quality of grape via controlling its micro-spray sprinkler irrigation. 【Method】 The experiments were conducted in Turpan-Nami Basin with the Thomson seedless white grape as the model plant. The microclimate in the grape vineyard was controlled by adjusting the duration of every spraying, the frequency of the sprayings, as well as the location of the emitters. 【Result】 When the emitters were above the trellis in the vineyard (WP1 treatment), the mist formed by the spray hindered the upwards movement of the air proximal to the ground surface, resulting in an increase in temperature, decrease in humidity, and ultimately a reduction in yield by 11 681.1 kg/hm2 compared to the CK with conventional irrigation. When the emitters were dropped to 50 cm from the top of the trellis, spaying one hour per day during the critical growth stage of the grape (berry growth period) increased the yield to 51 490.95 kg/hm2 along with a significant improvement in fruit quality. Further dropping the emitter could either increase or decrease the yield, but it improved the fruit quality compared to the CK. 【Conclusion】 Locating the emitters 50 cm below the trellis top and spraying one hour per day during the berry growth stage improved both yield and fruit quality of the grape. |
| Key words: thompson seedless white grape; microenvironment regulation; mist micro jet; yield; quality |
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