Effects Of Different Improvement Measures On Properties Of Alkalized Soil And The Growth Of Alfalfa

Hailiu area of Inner Mongolia Agricultural University,the distribution of large areas of the saline-alkali soil,in agriculture has not been fully utilized,so its improvement is imperative.In this study,12 kinds of improved measures were established by using organic fertilizer(O),compound fertilizer(F),modifier T and bio-modified agent(E)in field experiment and indoor experiment.The improvement of the alkalized soil,the systematic combination of soil properties and the growth of alfalfa in the test crop,and evaluated the effect of the 12 improved measures to identify the best improvement measures.The main findings are as follows:(1)the application of modifier E,soil alkalinity of the soil decreased by 3.50%,and the total salt content of the soil decreased with the CK,and the total salt content decreased by 0.77g/kg on average.After the improved soil pH,the pH of the 0-10 cm soil layer decreased from 9.50 to 8.49,and the pH in the 10-20 cm soil layer dropped from the original 9.49 to 8.62 and the pH in the soil layer 20-30 cm decreased by 0.37,so that the modifier E Improve the soil has a very good effect.(2)On the whole,different methods of improvement have different degrees of improvement.the order of the effect of the treatment is processed according to the processing.E>Process F + E>Process O + T + F>Process O + E + T + F>Process T>Process O + E>Process E + T>Treatment O + E + F>Treatment F + T + E>Treatment O + E + T>Treatment O + T>Treatment F + T>CK.The improvement effect of treatment E is the most significant,and the improvement effect of treatment F + T is relatively weak.(3)The content of soil organic matter 0-30cm soil layer did not change much after applying the modifier.The effect of treatment E and F + E on soil microbial carbon was very obvious,and compared with CK,treatment E and treatment F + E reached a very significant level.(4)The improvement measures not only have some improvement effect on the soil properties,but also have some influence on the planting alfalfa.First,the emergence rate of alfalfa in different improvement measures have different degrees of improvement.The plant height of alfalfa also increased after application.The biological yield of alfalfa will also change with the change of the way.Compared with CK,the biomass of Alfalfa increased by 47.89%,the yield of F + E was 42.84%,and the treatment of F + T was the same as that of other Processing yield at least,only 6.24%.The best improvement achieved by this test is to treat E,which plays the best role in soil and crop.