Study On Drought Resistance Of Atriplex Canescens In Western Liaoning

It is very droughty in western Liaoning, where the sandstorm is common. Therefore, thesustainable development is deeply effected by the soil and water loss and desertification of land inwestern Liaoning. It is very important to import a fine breed of shrub for soil and water conservation, sothat the coverage of vegetation in western Liaoning can be increased.The indoor seed germination test is done for the optimal germination temperature for westernLiaoning by importing seeds of Atriplex Canescens from Ningxia province. Seeds are soaked in GA3solution with different concentration to summarize the effect of GA3to the germination rate andgerminability. Experiments of container seeding and field seeding are done in western Liaoning for thesuitable seeding techniques. Drought resistance experiment of one year Atriplex Canescens is done bythe way of natural drought with the plastic basins, so that the drought resistance of Atriplex Canescensin western Liaoning can be summarized. Afforestation on hillsides with different site condition is doneto determine the growth characteristics and growth rhythm of Atriplex Canescens in western Liaoning.The results of experiments are analyzed with mathematical methods for the scientific conclusion.Based on the results of accelerating test, we can know that the optimal temperature for seedsgermination of Atriplex Canescens is25℃.The suitable concentration of GA3for seeds germination ofAtriplex Canescens is80mg/L at15℃and30℃and it is not suggested to use GA3at25℃.The suitable seeding time for Atriplex Canescens in western Liaoning is May and the nurserystocks should be covered with shading nets while seeding in field.By the experiment of drought resistance, we can know that the Atriplex Canescens has strongresistance to drought. Under the condition of no irrigation for several days, leaves of AtriplexCanescens are still fresh in a certain degree.Based on the results of survival ratio investigation, we can know that Atriplex Canescens cansurvive in both terrene hillside and stony barren land with a better survival ratio, but the nursery stockare small and weak. As an new tree specie for soil and water conservation in western Liaoning, if it issuitable for widespread in western Liaoning is still a question for a further research.