关键词: 板栗, 早熟, 品种

Abstract: The new extremely early-maturing cultivar of Chinese chestnut named‘Jingshuhong’was
selected from natural seedlings. ‘Jingshuhong’ buds on the middle of April，full bloom on the middle of
June，and nut mature at the end of August in Beijing. The total fruit developing period is about 75 days.
The morphology of involucres is oval. The burr contains 2.1 nuts，and the nut ratio is 44.6%. The nut shell
is reddish-brown and smooth. The roasted kernel is faint yellow，smells sweet and savory. The average
single nut is 8.2 g. The content of water、ash、fat、protein、sugar、starch and amino acids is 57.2%，2.0%，
4.5%，5.6%，20.4%，38.2% and 1.5%（dry weigh），respectively. Endocarp is easy to peel. After three
years grafting，the yield of per chestnut tree is 2.5 kg. This new cultivar is suitable for density cultivation，
the density is 2–3 m × 3–4 m.‘Yanshan Hongli’and‘Yanshan Zaofeng’are the appropriate pollination
trees.

Key words: chestnut, early-maturing, cultivar