帅枣系品种枝条果实生长发育动态研究1.doc

PAGE  PAGE 11 帅枣系品种枝条果实生长发育动态研究1） 赵雨明、卢桂宾、贺义才 （山西省林业科学研究院，山西 太原 030012） 摘要：年周期中，帅枣系品种枝条粗状充实，生长量大。枣头4月中旬开始生长，以后生长逐渐加快，直线上升，7月下旬末至8月初结束生长。枣头长、粗生长曲线均服从logistic生长模型，斜率高于对照。果实特大，纵、横、侧径生长动态也服从logistic生长模型。7月上旬至9月上中旬为子叶与果实快速生长期，果肉增长量占总重量的69%，帅枣系品种与对照的生长差异主要体现在这一时期,这是优质、丰产栽培的生理基础。帅枣系品种666.7m2留有效枣股数量为7500左右,吊果比0.50-0.65，极显著低于对照。丰产稳产，盛果期2×5m园单株产量4kg-4.5kg，较好地保持了木枣的丰产性和适应性，经济效益比木枣番了一翻。 关键词：枣树；帅枣;生长发育;动态;丰产指标;产量 中图分类号：s664.1 文献标识码：A 文章编号： Dynamics of growth and development of shuaizao serial cultivars/Zhao yuming，Lu guibin ,He yicai(shanxi Academy of Forestry Sciences,030012 Taiyuan, P.R. china)//Journal of Northeast Forestry University.-2011 In the year growth period, the branch of shuaizao serial cultivars grows thick, long, and substantial. The extension shoot begins to grow in the second ten days in April, then grows quick gradually, rising sharp, and ends in the end of the last ten days in July and early in August, the long and thick growth curves obey to logistic growth pattern, the slope of which is higher than ck。The fruit is large specially, the growth dynamics of Vertical diameter and Horizontal diameter obey to logistic growth patterns. quick growth period of cotyledon and fruit is from the fast ten days in July to the first and second ten days in September, in which the increasing amount of flesh to total amount of fruit weight is 69%, and the grow difference between shuaizao serial cultivars and ck mainly appears, which is physiological base of good quality and high yield cultivation. The number of Mother bearing branch per 666.7m2 is 7500, Bearing branch-fruit ratio is 0.50-0.65,which are significantly lower than ck. The yield of shuaizao serial cultivars is high and stable in fruiting period, the yield of single plant is 4.0 to 4.5kg, which preserves the ability of high and stable yield ,and adaptability of muzao(ck), the economic benefits is double. Key words: Chinese jujube; shuaizao serial cultivars; growth and development; dynamic; high yi