Effects of Different Saline-alkali Soil on Seed Germination and Seedling Growth of Two Kinds of Crops

[Objective] Saline-alkali soil can affect the germination and the growth of different crops. The study on the effects of different degree of saline-alkali soil on the germination and the growth of crops will give the support for the agriculture and the well use of the saline-alkali soils. [Method]Selecting wheat and sorghum as the test materials,saline-alkali soil and black soil were mixed by five different proportions.Pot culture method was used to explore different levels of salinity stress on wheat and sorghum seeds germination and seedling growth conditions. [Result]With the augmentation of the salinity stress,wheat and sorghum seeds germination rate and germination vigor index showed a downward trend. In lower degree of soil salinity,the germination rate and germination vigor index of wheat and sorghum was higher than those of the control. And with the increase of salinity levels,seed germination was inhibited. With the augmentation of the salinity stress,their biomass showed obvious downward trend during the wheat and sorghum seedling growth process.[Conclusion]Salinity of wheat and sorghum germination rate,germination potential,germination vigor index and biomass had significant influence. The seeds of wheat and sorghum could germinate and grow better in lower degree of saline alkali,while in the medium and serious saline-alkali soil,the germination and the growth of these two crops were all restrained.