ECOlOGICAl ANALYSES OF THE REACTION OF SOME FARM CROPS IN HESI CORRIDOR ON SAlT DAMAGE Ⅰ.Corr lation between crop yields and salt content
Jia Hui-xian Zhao Man-rong (Gansu Agricultural University) Zhao Song-ling Li Zi-zhen(Lanzhou University)
This paper deals with the study of the correlation between the salt content in the saline-alkali soil and the yields of wheat,corn and broab beans grown in Jiuquan, Changye and Minqin counties in Hesi corridor. It has been found that correlation between the content of all salts and crop yields statistically takes the shape of the letter "S" . Emphasis has been given by means of mathematical analyses to the study of the interrelation between crop yields and chlorides which influence them most harmfully.