JIANG Ji-yuan,CHEN Qi-ling,LI Ming,et al.Study on Annual Dynamic Rhythm of N,P and K Content in Leaves of Junzao Jujube[J].Northern Horticulture,2014,38(11):27-29.
骏枣叶片中氮磷钾含量年动态变化规律研究
- Title:
- Study on Annual Dynamic Rhythm of N,P and K Content in Leaves of Junzao Jujube
- 文章编号:
- 1001-0009(2014)11-0027-03
- Keywords:
- sandy land; Junzao jujube; annual dynamic rhythm
- 分类号:
- S 665.1
- 文献标志码:
- B
- 摘要:
- 以6年生沙地骏枣为试材，分别测定了新梢枣吊叶片和老枣股枣吊叶片中不同生育期氮、磷、钾的含量并分析其变化情况，以确定新疆和田皮墨垦区沙地骏枣叶营养诊断的适宜采样部位和采样时期。结果表明：沙地骏枣叶片中氮、磷、钾的动态变化具有明显的规律，新梢枣吊叶片中含量都高于老枣股枣吊叶片中含量；在营养生长期氮、磷含量呈上升趋势，钾的含量呈下降趋势；氮、磷在新梢枣吊叶片和老枣股枣吊叶片中表现类似的变化趋势，钾的变化则新梢枣吊叶片和老枣股枣吊叶片中差异较大。综合考虑，对新疆和田皮墨垦区沙地骏枣进行氮、磷、钾叶营养诊断时，采样部位应选择新梢枣吊叶片，采样时期为8月上旬。
- Abstract:
- With 6-yearold Junzao jujube planted in the sandy land as tested material,the contents of N,P and K in different leaves of Junzao jujube in different growth stages were measured,and the changes were analysised,in order to determine the suitable sampling stage and the appropriate sampling sites for nutrition diagnosis of Junzao jujube in Pimo Reclamation of Xinjiang.The results showed that,dynamic changes of the contents of N,P and K in different leaves of Junzao jujube had a significant rule.The contents of N,P and K in the leaves living in jujube fresh treetop were higher than that living in the jujube stock.The contents of N and P in different leaves of Junzao jujube showed a decreasing trend in the vegetative growth stage.But the contents of K showed a rising trend.The contents of N and P in different leaves had a similar trend in annual growth cycle,but the contents of K in different leaves were difference.It was considered comprehensively that the suitable sampling stage was early August and the appropriate sampling sites was the leaves living jujube fresh treetop.
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备注/Memo
第一作者简介：姜继元（1982-），男，硕士，助理研究员，现主要从事果树营养等研究工作。E-mail：jiangjy8201@sina.com.
责任作者：陈奇凌（1970-），男，本科，副研究员，现主要从事果树栽培技术等研究工作。
基金项目：国家科技支撑重大专项资助项目（2011BAD48B03）。
收稿日期：2014-02-10