观赏桃品种需冷量的研究

Chilling Requirement of Oranamental Peach

采用 0℃～ 7.2℃模型的累积低温计算方法 ,以加权法为萌芽计算标准 ,通过对 2 9份观赏桃PrunuspersicaBatsch .(L .)品种资源的需冷量研究 ,结果表明 :我国重瓣桃花品种的需冷量分布范围为 4 0 0h～ 12 5 0h ,并以 90 0h以上的品种为主。红花垂枝桃、红花重瓣寿星桃、鸳鸯垂枝、红叶桃、洒红桃和菊花桃等名优品种的需冷量分别为 92 6h、930h、1188h、1112h、12 14h和 12 5 0h ,郑州地区需冷量的满足时间基本在

0℃～7.2℃model was used as estimation of the chilling requirement of 29 ornamental peach varieties at Zhengzhou in Henan . The results showed that chilling requirement of ornamental peach flower cultivars ranged from 400 h～1250 h,with most of cultivars requiring more than 900h. Chilling requirement of some famous cultivars,such as Honghua Chuizhitao,Honghua Chongban Shouxingtao,Yuanyang Chuizhi,Hongyetao,Sahongtao and Juhuatao were 926 h, 930 h, 1112 h,1188 h, 1214 h and 1250 h,respectively. Their chilling was met at the end of January or later.