Statistical Analysis of the Relationship between Irrigated Saline Water's Mineralization Degree/Salt Mass and the Relative Yield of Wheat
SHANG Wei
SHI Jian-chu
NIU Ling-an
ZUO Qiang
Abstract：Totally 103 sets of mineralization degree vs. relative yield and salt mass per unit area vs. relative yield were pooled together, and both data sets showed general trends, independent on different conditions of soil environments, wheat species, climates, etc. The relative yield of wheat under saline water irriga-tion decreased with increasing degree of mineralization and brought in salt mass of the supplied saline wa-ter. Two linear functions were fitted to characterize relationships of the mineralization degree vs. relative yield, and brought in salt mass per unit area vs. relative yield, respectively with the determination coeffi-cient of 0. 59 and 0. 55. The statistical results show that increasing the degree of mineralization 1 g/L would lower down 5.6% of the yield when the mineralization degree of the irrigated water was greater than 1 g/L; and raising the brought in salt mass per unit area 1000 kg/hm~2 would result in decreasing the yield about 2%. To verify the fitted linear functions, measured values of mineralization degree and brought in salt mass per unit area from a field experiment were respectively used to estimate the relative yield of wheat. The comparison show that the relative errors between the estimated and measured relative yield of wheat were within 16%.
Keywords：saline water irrigationdegree of mineralizationbrought in salt mass by saline water irriga-tionwheatrelative yield
Publication Date：2009-01-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：4( 41-44 )