北京地区棚栽台湾青枣丰产栽培措施研究

以北京地区大棚栽植的台湾青枣"大蜜"为材料,分别对其进行环剥、摘心、断根和施肥处理,研究了不同的栽培措施对台湾青枣生长和坐果的影响。结果表明:环剥对提高台湾青枣坐果率作用明显,其中既环剥一次枝又环剥主干的方式效果最好;台湾青枣的根系分布较浅,0～20cm深土层根系分布密集;陆续断根的方式,即第一次只断两面或一面,然后分2～3次每次切断一面的断根方式对于促进坐果的效果较优;增施N、P、K肥可显著提高坐果率,三者配比为N:P:K≈3:1:3时对坐果影响最显著。

Studies on Cultivation Measures of Ziziphus mauritiana Lamk in Greenhouse in Beijing

A variety of date(Ziziphus mauritiana Lamk) in greenhouse in Beijing was used as trial materials to study the effects of girdling,pinching,root-cutting,fertilization on fruit setting and growth.The results showed that girdling improved the fruit set rate of green jujube and both girdle trunk and the first branch was the best.The root distribution of green jujube was relatively shallow,mainly concentrated in 0~20cm soil layer.Root cutting in succession also improved the fruit set effectively.The optimization ratio for N,P and K fertilizers was N:P:K≈3:1:3.