摘要
本试验研究了河套治区甜菜对锌素的吸收及分配规律,结果表明:生育前期甜菜吸收锌素的速率较高,之后随生育进程逐渐降低。单位于物质中的含锌量也是生育前期高、后期低,但单株绝对含量随生育进程而增加。锌素在不同器官间的分配规律是,前期主要分配于叶丛,之后随生育进程叶丛中的分配率逐渐降低,而块根中的分配率却相对增加,但就绝对含量而言,叶丛始终高于块根。
The regularity abeut Zn absorption and distribution bf sugarbeet were stud-ied。The results showed:in early stage of sugarbeet,the Zn absorpton rate is high,thengradually slovvs down。The Zn content per unit dry matter is also high in early stage,andlow in later stage,but Zn accumulation volume of single plant increases gradually w1th plantgrowth.The regularity of Zn distribution in different organs of sugarbeet is that at earlystage,Zn is mostiy allocated in foliage part,after that,it gradually decreases,but absoluteZn content of the foliage is always higher than root。
关键词
甜菜
锌
吸收
分配
sugarbeet,Zinc,absorption,distribution