Comparison experiments and correlated analysis of corn varieties in the middle and lower reaches of Tarm River

An experiment on corn variety comparison among Shidan no. 4 corn, Dandong no. 7 corn SC-704 com had been done on heavily salted and sanded soil, and the analysis of correlation about leaf length and mass of single corn was done, between 2002 - 2003. The result indicate that adaptability of Shidan no. 4 com, Dandong no.7 corn and SC-704 corn was strong, and was able to complete whole grow period. Two traits had close relation with Shidan no. 4 single mass, female fringe length > leaf length. The standardization regression coefficient of leaf length and female fringe respectively was 0.442 and 0.456. Four traits had close relation with SC-704 corn single mass, female fringe length > single corn high > leaf width > section length. The standardization regression coefficient of female fringe length and single corn height respectively was 0.487 and 0.382. Two traits had close relation with Dandong no. 7 corn, single corn hight > the female fringe length, the standardization regression coefficient of height, leaf width was 0.530 and 0.379 respectivly.