Response of Red Cartridge Kiwifruit to Temperature and Precipitation Change in Enlargement Period in Guizhou
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Abstract:
In order to study the effects of temperature and precipitation on the growth of red cartridge kiwifruit in enlargement period at Houchang Village (Shuicheng County, the Guizhou Province), by means of the daytoday temperature and precipitation data from May to July, 2009 to 2014 and the data at the same time of red cartridge kiwifruit diameters in the enlargement period, an analysis is made of the responses of red cartridge kiwifruit enlargement to temperature and precipitation. The results show that in the 6 years, June is the key time for red cartridge kiwifruit enlargement, and followed by May. For fruit enlargement, the most suitable temperature is 18 ℃ to 24 ℃, with the average horizontal fruit enlargement speed being 0.48 mm/d and the average longitudinal enlargement speed being 0.61 mm/d, and the most suitable precipitation is 1.1 mm to 20.0 mm, with an average fruit horizontal enlargement velocity of 0.54 mm/d and an average longitudinal enlargement speed of 0.60 mm/d, with the correlation being significant levels (〖WTBX〗P〖WTBZ〗< 0.05). The accumulated temperature in the fruit enlargement period and the yields of red cartridge kiwifruit are negatively correlated with an extremely significant level (〖WTBX〗P〖WTBZ〗 = 0.000) and precipitation and the yields are positively related with also an extremely significant level (〖WTBX〗P〖WTBZ〗 = 0.001). When the accumulated temperature in the enlargement period of red cartridge kiwifruit is below 2100 ℃ and precipitation is more than 670 mm, the yield is above 2.3 kg/m2, and when the accumulated temperature enlargement period is higher than 2100 ℃ and the precipitation is less than 410 mm, its yield is below 2.0 kg/m2. In order to provide evidences for yield increase, the upper and lower limit indexes of temperature and precipitation for red cartridge kiwifruit enlargement are established.
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Supported by:Beijing E-Tiller Technology Development Co., Ltd.
Supported by:Beijing E-Tiller Technology Development Co., Ltd.