Sweet Cherry (Prunus avium L.) is praised as“titbit of fruit”because of its beautiful fruit, high quality, rich nutrient and ripen earliest in the north deciduous fruit trees in spring ,thus it also has the good name of '' the first branch of spring fruit. The fruit of Sweet cherry is expensive and, it is introduced and cultivated in many provinces of China. Low temperature is an important factor to limit the distribution and growth of plants. Especially in northern of China, which has a long cold w...
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