Effect of Long-term Located on Soil Physical Properties Undisturbed Black Soil Moving

In order to ensure the effect of environment change and soil moving on soil physical properties,four treatments of long-term located fertilization test including CK,NPK,MNPK and M were studied to investigate the soil bulk density,moisture,porosity and three phases rate.The results showed that the moving of undisturbed frozen soil had some disturbances on soil physical properties,and had greater impact on 0~20cm soil layer than the 20~40cm soil layers.Soil porosity of 0~20cm after moving was higher than before,and the porosity of 20~40cm soil layer after moving was lower for 11.8%than before.The variation coefficient of soil porosity before soil moving was higher than after soil moving which values were 2.3%~5.9% and 0.6%~1.7%.Three phases rate of 0~20cm soil layer after soil moving reduced and 20~40cm soil layer increased.The variation coefficient of soil bulk density ranged from 1.7%to 7.2% before moving and 1.5%to 17.1%after moving.The field capacity of CK before soil moving 0~20cm soil layer(28.7%)was lower(44.3%),field capacity of other treatments after soil moving was 35%~45%,the M and MNPK treatments had a higher value and it mean organic matter,fertilizer consolidated could improve the holding water.The moisture of soil was lower as following the soil depth increased from 0to 60cm before soil moving,and after soil moving it could merge with local soil.