Effects of Water and fertilizer on Sunflower Photosynthetic Characteristics under the Salt Stress
Abstract：To study effects of water-fertilizer coupling on crop photosynthetic characteristics under salt stress,the main crop-oil sunflower in Hetao irrigation of Inner Monglia was taken as the research object to conduct field test by using 312-D optimal saturation test design.The results showed that the optimal treatment on light salty soil was N 225 kg/hm2,P 150 kg/hm2,W 104.7 mm,and the optimal treatment on moderate salty soil was N 225 kg/hm2,P 150 kg/hm2,W 154.9 mm.Compared with the N,we can increase the stomatal limitation value better with the P and decrease the effect of non-stomatal factors on saline soil.The water using efficiency of sunflower could reach the highest with the combinations of N and P(N was 225 kg/hm2,P 150 kg/hm2).The sunflower's loss of its noon break with the amount of nitrogen under 384 kg/hm2 could be reduced.
Keywords：salinizationwater and fertilizer couplingsunflowerphotosynthetic
Publication Date：2012-01-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：5( 73-77 )