摘要
目的以不同基因型园林植物品种为试材,对其在磷胁迫条件下的总根长、最长根长、根表面积、根体积和根尖数进行比较研究,探究园林植物磷高效利用的主要根系及根际过程。方法采用一元二次方程拟合的方法,对不同基因型园林植物品种采取P10、P50、P200的供磷水平,分析不同供磷水平下的根系性状、根性状、冠表现特点及磷吸收量。结果园林植物根系形态及根际特征变化的磷含量在一定范围内有良好的线性关系。结论土壤有效磷浓度与园林植株地上部磷吸收量呈极显著负相关,与园林植株根部磷吸收量、全株磷吸收量、磷吸收效率呈极显著正相关。
Objective The total root length,maximum root length,root surface area,root volume and root tip number of garden plants with different genotypes under phosphorus stress were compared to explore the main root and rhizosphere processes of high phosphorus utilization in garden plants.Methods With the method of unary quadratic equation fitting,the phosphorus supply levels of P10,P50 and P200 for different genotypes of garden plant varieties were adopted to analyze the characteristics of root,root,crown and phosphorus uptake under different phosphorus supply levels.Results There was a good linear relationship between phosphorus content in root morphology and rhizosphere characteristics of garden plants in a certain range.Conclusion The available P concentration in soil was negatively correlated with the P uptake in overground of garden plants,and positively correlated with the P uptake in root,whole plant and efficiency of garden plants.
作者
刘志中
陈汉章
LIU Zhi-zhong;CHEN Han-zhang(Minxi Vocational and Technical College,Longyan,Fujian 364021,China;Fujian Jiangnanchun Urban Construction Group Co.,Ltd,Zhangzhou,Fujian 363000,China)
出处
《河北北方学院学报（自然科学版）》
2022年第7期30-37,共8页
Journal of Hebei North University:Natural Science Edition
基金
2013年省属公益类科研院所专项:“薄壳山核桃优良品种引种试验”(闽林研201338)。
关键词
园林植物
磷胁迫
根系适应性
磷吸收量
garden plant
phosphorus stress
root adaptability
phosphorus absorption capacity
作者简介
刘志中(1974-),男,福建龙岩人,讲师,学士,研究方向:园林景观工程施工与设计和园林植物应用;通信作者:陈汉章(1962-),男,福建龙岩人,本科,副教授,研究方向:森林培肓、城市湿地及林木病虫害研究。
