Research on spatial distribution of photosynthetic characteristics of Winter Wheat

3rd International Conference on Energy Equipment Science and Engineering

Yan, Q.Q.^1 ; Zhou, Q.Y.^1,2 ; Zhang, B.Z.^2,3 ; Han, X.^2,3 ; Han, N.N.^1 ; Li, S.M.^1

College of Water Conservancy Engineering, Tianjin Agricultural University, Tianjin

300384, China^1

State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing

100048, China^2

National Center of Efficient Irrigation Engineering and Technology Research-Beijing, Beijing

100048, China^3

关键词: Bottom layers;    Canopy layer;    Different growth stages;    Grain filling;    Growth period;    Maturation stage;    Photosynthetic characteristics;    Photosynthetic rate;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/128/1/012021/pdf
DOI  :  10.1088/1755-1315/128/1/012021

来源: IOP

【 摘 要 】

In order to explore the spatial distribution of photosynthetic characteristics of winter wheat leaf, the photosynthetic rate on different parts of leaf (leaf base-leaf middle-leaf apex) and that on each canopy (top layer-middle layer-bottom layer) leaf during the whole growth period of winter wheat were measured. The variation of photosynthetic rate with PAR and the spatial distribution of winter wheat leaf during the whole growth periods were analysed. The results showed that the photosynthetic rate of different parts of winter wheat increased with the increase of PAR, which was showed as leaf base>leaf middle>leaf apex. In the same growth period, photosynthetic rate in different parts of the tablet was showed as leaf middle>leaf base>leaf apex. For the different canopy layer of winter wheat, the photosynthetic rate of the top layer leaf was significantly greater than that of the middle layer and lower layer leaf. The photosynthetic rate of the top layer leaf was the largest in the leaf base position. The photosynthetic rate of leaf of the same canopy layer at different growth stages were showed as tasseling stage >grain filling stage > maturation stage.