Abstract:

To better promote the rapid development of local grape industry in Yanjing of Mankang County of Qamdo City in Tibet, this study adopted parallel observation and mathematical statistics method to carry out the artificial observation on grape phenological phase and the automatic monitoring of meteorological elements, and then, according to the obtained data, analyzed the climate adaptability of grape at different growth periods and put forward disaster prevention countermeasures. The results showed that grapes in Yanjing generally began budding from early to late March, and entered the flowering period in early and middle May. The berry enlargement period came in late June to early July, after more than a month, grapes began to turn color and matured in mid-October. The leaves fell in late October and the grapevine went into the period of dormancy. Yanjing grapes needed about 200 days from budding to ripening. The light condition in Yanjing could fully meet the needs of normal growth and development of grapes, and the daily temperature in the budding period was mostly above 10℃. The average daily temperature in the flowering period was 16.4-20.6℃, and more than 80% of the period was above 25℃. The average daily maximum temperature was 21.9-28.0℃ and the wind speed was strong during the berry enlargement period, and the wind speed could reach 10 m/s for more than 20 days. From budding to fruit bearing period, there was little precipitation，while the rain continued to increase from the berry enlargement period but still could not meet the growth and development demand of grapes, which must be supplemented by irrigation.

Key words: Yanjing, grape, growing period, meteorological condition