摘要
通过不同容积砖槽,研究了限根对寒富苹果幼树养分分配及枝类构成的影响。结果表明:总干物质量随根域空间减小而下降,生长季前期干物质及可溶性糖等养分主要分布于叶片中,落叶期粗根中的分配比例增加。根域空间减小提高了枝干韧皮部的干物质分配及养分的分配比例,而木质部的分配比例降低,使植株生长势减弱,形成短枝比例明显增加,有利于促进果树由营养生长向生殖发育方向转化。
The effect of different root-zone space on nutrient distribution and constitute of shoot types was conducted on Hanfu apple. The results indicated that total dry matter content reduced with the decreasing of root-zone space. The soluble sugar and other nutrient matter mainly located in leaf in early growing phase and then transferred to coarse root in defoliation phase. With the decreasing of root-zone space the ratio of dry matter and other nutrient matters distribution to xylem increased and decreased to phloem. At the same time the grow vigor become slowly,the spur ratio increased and the apple tree transferred from vegetative to reproductive growth.
出处
《北方园艺》
CAS
北大核心
2010年第1期1-4,共4页
Northern Horticulture
基金
国家现代苹果产业技术体系建设专项基金资助项目(nycytx-08-03-05)
公益性行业科研专项基金资助项目(nyhyzx07-024)
辽宁省农业攻关计划资助项目(2008204003)
沈阳市科技攻关计划资助项目(1091104-3-02)
关键词
限根
苹果
养分分配
枝类构成
root restriction
apple
nutrient distribution
constitute of shoot types
