| Effects of grapevine row direction on temperature under plastic film during overwintering period |
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| DOI：10.7606/j.issn.1000-7601.2017.02.39 |
| Key Words: grapevine overwintering row direction double-layer film mulching snow covering temperature under film compensation/deficit temperature northern slope of the Tianshan Mountain |
| Author Name | Affiliation | | LI Yin-fang | Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China | | PAN Bo-rong | Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China | | Adil Ubir | Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China | | SHEN Qing-lin | Fukang Forest Bureau, Fukang, Xinjiang 831500, China | | FANG Gui-juan | Fukang Forest Bureau, Fukang, Xinjiang 831500, China | | LI Qi | Fukang Meteorological Bureau, Fukang, Xinjiang 831501, China | | MA Hong-liang | Fukang Meteorological Bureau, Fukang, Xinjiang 831501, China | | Xin He-pin | Fukang Meteorological Bureau, Fukang, Xinjiang 831501, China |
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| Abstract: |
| The values of daily temperature in grapevine field with different row directions were measured in Fukang, Xinjiang, China in winter of 2014—2015 based on the situation that the snow covering over the double-layer film mulching during overwintering was too thin, especially for east-west grapevine rows. The results revealed that the minimum temperature along the east-west rows was relatively high during the coldest period in winter. Along the east-west grapevine rows, there was a compensation temperature higher than the soil-buried temperature, but there was a deficit temperature lower than the soil-buried temperature along the south-north grapevine rows. The temperatures were -3.0℃, -5.4℃ and -4.6℃ along the east-west rows, south-north rows and soil-buried rows respectively when the minimum daily temperature was -25.6℃, and based on the estimation they were -9.6℃, -13.6℃ and -10.4℃ respectively when the extremely minimum temperature was 37℃. The grapevines could survive under the extremely minimum temperature and the long-period low temperature under both row directions, but the east-west one was better than the south-north one. The maximum temperature and average temperature along the east-west rows were also higher than those along the south-north rows, while the temperature difference was opposite. The sprouting dates of grapevines were 37 and 35 days earlier along the east-west rows and south-north rows respectively than those buried by soil. The grapevines along the east-west rows could grow more luxuriantly and the yield and quality were higher than those along the south-north rows. Therefore, the east-west direction is optimal for the overwintering of grapevines even when snow covering is thin. When fence-frame south-north cultivation is adopted, the double-layer film mulching during overwintering is also safe and reliable. |
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