摘要
应用３２Ｐ研究了温度和光强对金钗石斛吸收磷素的影响。结果表明，２５℃和４０℃处理，植株吸磷量分别为１０℃处理的２．３和２．５倍。２５℃处理，茎中３２Ｐ放射性比活度最高。在中度光（２×１０４Ｌｘ）和高光强（５×１０４Ｌｘ）下，植株吸磷量分别较弱光（５×１０３Ｌｘ）下增加７４％和２３％。在中度光下，茎中３２Ｐ放射性比活度最高。
The isotope 32 P was used to monitor different temperature and light intensity on the in take of phosphrus in dendrobe. The amount of phosphrus taken up by the plants under conditions of 25 and 40 were 2.3 and 2.5 times that of 10 treatment, respectively, and the radioactivity of 32 P in stem was the highest in 25 treatment. Compared with low light intensity (5103) treatment, the phosphrus absorbed increased by 74% and 23% in the treatments of intermediate light intensity (2104Lx) and high light intensity (5104Lx), respectively, and the radioactivity of 32 P in stem was the highest in intermediate light intensity treatment.
出处
《西南农业大学学报（自然科学版）》
CSCD
1999年第3期220-222,共3页
Journal of Southwest Agricultural University
基金
国家自然科学基金
关键词
石斛
磷
温度
光
dendrobium nobile iindl.
phosphorus
temperature
light
