摘要
本试验用￣（８６）Ｒｂ、￣（１４）Ｃ－示踪方法研究了中华猕猴桃对钾素营养的吸收运转规律，钾对植株光合作用的影响。试验表明，植株对钾素的吸收量无论是果实或叶片都以８月上旬至９月上旬吸收为多，在植株各器官中以新叶含量最多，即新叶＞老叶＞茎＞根。在同一叶片上叶柄内单位干物重的含钾量高于叶片，随着钾肥用量的增加，植株体内的含钾量增高。增施钾肥能提高植株的光合强度和植株中全钾含量，但施用氯化钾对猕猴桃会产生毒害作用。
In this experiment the ￣(86)Rb、￣(14)C-tracing method was used to study the rule of potassium nuti-tion absorption and transfer by Actinidia chinensis planck,and the effect of potassium nutrition on the photo-synthesis of this plant.The results showed that the potassium nutrition uptake either by the fruits or by theleaves was highest from mid August to n1id September.The potassium contents in all the organs in order werenewleaf>old leaf>stem >root.In the same leaf,the potassium content of per unit dry weight of the petiolewas higher than that of the leaf blade.The increace of the potassium content was proportional to the amountof potash fertilizer.The application of potash fertilizer could promote the photosynthesis intensity and thepotassium content of this plant.However,dressing potassium chloride did harm to Actinidia chinensis planch.
出处
《激光生物学》
CSCD
1994年第4期564-567,共4页
Acta Laser Biology Sinica
关键词
中华猕猴桃
钾
吸收
分配
Actinidia chinensis planch
￣(86)Rb
￣(14)C
transfer distribution
