摘要
根据枣股的有效结果年龄,把调查的125份枣品种分为4个类型:1～3龄枝结果为主;2～9龄枝结果为主;1～9龄枝结果为主和2～6龄枝结果为主,它们分别形成各类品种产量的85%以上。“1～3”型品种早果性强,早丰性好.但成龄树立体结果能力极差;“2～9”型品种早果性差,但开始结果后产量上升快丰产稳产:“1～9”型品种多数为小果型品种,虽早果性强,但早丰性差,盛果期树立体结果能力强;“2～6”型品种早果性较差,并有不同程度的大小年现象。
According to the continued bearing capacity of Mother spur of jujube,125 Chinese jujube varieties were classified into four types,iefruits were produced on 13 years old branches,1～9 years old branches,2～9 years old branches and 2～6 years old branches,those take 85% yield of all vari- eties.The“1～3”type posssses tne properties of early bearing and high early produotivity,but the stere- o-bearing ability of grown-up tree is much less.The yield of young trees in“2～9”type is low,and af- ter its first bearing the yield increases very quickly and stably.Most of“1～9”types are small fruit varieties,the output of young trees which are early-bearing is low,however,the grown-up trees pos- sesses strong stereo-bearing capacity.The“2～6”types is with less early-bearing ability,and alternate of bearing also occurs sometimes.
出处
《山西农业科学》
1993年第1期48-51,共4页
Journal of Shanxi Agricultural Sciences
关键词
枣树
品种
结果
丰产性
Mother spur of jujube
Bearing age
Yielding ability
