几个引进枣品种枣头及果实生长发育规律的研究

研究得知湘南地区引进沾化冬枣、梨枣和骏枣的枣头一次枝(下简称枣头)伸长生长节律与本地品种鸡蛋枣相似,幼树期枣头有两次明显的伸长生长过程,其间出现生长暂缓期。从枣头年生长量看,三个引进品种均比本地品种鸡蛋枣要小,但秋季生长量比重均比鸡蛋枣还要大。三个引进品种果实均较鸡蛋枣大,果实生长规律均与鸡蛋枣相似。但各个品种果实生育期均长于鸡蛋枣。冬枣果实生育期最长为100天~110天,梨枣与骏枣果实生育较短,梨枣70天~75天,骏枣约85天,而鸡蛋枣只有65天~70天。

An Empirical Research on the Regular Growing and Developing Pattern of First Branches and Fruits of Several Introduced Strains of Chinese Jujube

We have found that the growing and stretching rhythm of the first branches of the introduced 'Zhanhuadongzao' jujube,pear jujube and jun jujube in the southern areas of Hunan,is similar to that of the local strain jidan jujube;the first branches of young plants have two tangible growing and stretching process.The yearly growth volume of the first branches of the three introduced strains is smaller than the local strain jidan jujube,yet their proportion of the growing volume in autumn is bigger than that of jidan jujube.The fruits of the three introduced strains are all bigger than jidan jujube,their fruit growth pattern is similar to that of jidan jujube,But the growing and developing periods of fruits of the introduced Chinese jujube are all longer than those of jidan jujube.The growing and developing period of the Zhanhuadongzao jujube's fruits is the longest,which lasts 100 days~110 days,pear jujube's period lasts 70 days~75 days,jun jujube's period lasts about 85 days,while jidan jujube's period lasts nearly 65 days~70 days.