生物炭作为一种土壤改良剂越来越受到学界认可。当前，对生物炭对土壤改良研

Biochar as a soil conditioner more and more academic recognition. Currently, biochar for soil improvement research mainly in tropical, subtropical and temperate acidic soil as the main object, while about biochar western semiarid area of ​​Heilongjiang Province, soil physical and chemical properties and soil salinity on crop growth micro-environment and research reports on Relatively small. In this study, Soil salinity and semiarid region characteristic change of plant rhizosphere and crop growth as the starting point of biochar in saline soil and plants field scale environments effect studies with a view to administering forth biochar soil salinization, nutrient index change and the change of soil micro-environment, thus providing a reference for the development and utilization of biochar in semiarid area on saline agriculture.

Biochar as a soil improver is more and more recognized by the academic community. At present, the research on soil improvement of biochar is mainly based on tropical, subtropical and temperate acidic soils, while the research on the physical and chemical properties of saline soil saline soil and soil microenvironment and crop growth in the western semi-arid region of Heilongjiang Province are relatively few. In this study, the application effect of biochar in the field scale and potted plant environment of bio-carbon in semi-arid zones is studied, with a view to expounding the law of bio-carbon application to the soil condition, nutritional index change and change of soil micro-environment. Therefore, biochar is used for development and utilization in agriculture in the semi-arid salt and alkali region.

Biochar as a soil improver is more and more recognized by the academic community. At present, the research of biochar on soil improvement mainly focuses on the tropical, subtropical and temperate acid soils, while the research reports about biochar on the physical and chemical characteristics of saline alkali soil, Soil Microenvironment and crop growth in the western semi-arid region of Heilongjiang Province are relatively few. Based on the physical and chemical characteristics of saline alkali soil and the changes of plant rhizosphere microenvironment and crop growth and development in semi-arid area, this paper studies the application effect of biochar on the field scale and potted environment of saline alkali soil, in order to expound the change rule of biochar application on the physical and chemical properties of saline alkali soil, the change of nutrition index and the change of Soil Microenvironment, so as to provide the basis for biochar agriculture in saline alkali semi-arid area Provide reference for development and utilization.