[Maize growth and phosphorous- and zinc uptake under different phosphorous supply levels].
By the method of solution culture, this paper studied the P and Zn uptake of maize at its growth stages under different P supply levels. The results showed that maize growth reached its maximum at the supply level of 100 micromol P.L(-1), while the root/shoot ratio was the highest at 0.1 micromol.L(-1) P supply. Increase of P concentration in culture solution promoted the uptake of P, but decreased its utilization rate. The Zn content in root increased with increasing P supply, while that in shoot varied little, which meant that the Zn transportation rate from root to shoot had little change with increasing P concentration. There was a positive correlation between the concentrations of Zn and P in maize seedling roots.
Zhang
Fucang
F
Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas, Northwest Sci-Tech University of Agriculture and Forestry, Yangling 712100, China. Zhangfucang@tom.com
Kang
Shaozhong
S
Gong
Daozhi
D
Li
Zhijun
Z
D010758:Phosphorus / Q000032:analysis* / Q000378:metabolism; D018517:Plant Roots / Q000378:metabolism; D018547:Plant Stems / Q000378:metabolism; D012987:Soil / Q000032:analysis*; D003313:Zea mays / Q000254:growth & development* / Q000378:metabolism; D015032:Zinc / Q000378:metabolism*
D012987:Soil; D010758:Phosphorus; D015032:Zinc