Effect Of Different Improvement Measures On Physicochemical Characteristics

Saline-alkali soil is one of wide distributing soils, Songnen Plain which western Plains are concentrated saline-alkali soil in China is one of the regions. Seriously hindered the development of agricultural production. At present, how to amend and use saline-alkali soil was becoming a focus of researches. A study was conducted on the moderate alkalized meadow soil and severe alkalized meadow soil in ZhaoZhou, Daqing of the Songnen Plain.The experiment was arranged in a randomized complete block design. Using seven different improvement measures, study on soil physical properties, chemical properties of alkalized meadow under different improvement measures. Analyzed the soil biological properties and production change. The results showed that:On the moderate alkalized meadow soil, different improved methods could improve soil properties,soil enzyme activities and maize yield. Organic fertilizer treatment and furfural residue treatment are better than other treatment, soil field capacity compared with CK were increased by2.95%and2.99%. Initial infiltration rate, the steady infiltration rate, the average rate and achieve a steady infiltration rate are best. The sum of water stable aggregates were increased by12.51%and19.14%.Treatment of aluminum sulfate is the best for dropping pH, organic fertilizer treatment and furfural residue treatment take second place.Compared with CK reached significance level of difference. Organic fertilizer treatment and furfural residue treatment are better than other treatment for dropping CEC,exchange sodium and ESP. Compared with CK reached significance level of difference. Foreign soil gaze contribute little to improve soil nutrient.Other treatment can enhance contents of organic matter, active organic matter, available NP, improveing available K not obvious.Organic fertilizer treatment and furfural residue treatment are better than other treatment for improving soil enzyme activity.Organic fertilizer treatment and furfural residue treatment are better than other treatment for improving corn yield,increasing of29.87%and26.4%compared with CK.On the severe alkalized meadow soil, foreign soil gaze is best for improving water stable aggregates and soil permeability.followed by organic fertilizer treatment.Organic fertilizer treatment is best for improving soil field capacity. Furfural residue treatment is better for improving soil field capacity, soil permeability, water stable aggregates. Organic fertilizer treatment is best for dropping pH, exchange sodium,ESP. Organic fertilizer treatment is best for improving CEC. Foreign soil gaze is best for dropping conductivity. Aluminum sulfate treatment is better for dropping pH and conductivity, followed by furfural residue treatment. Furfural residue treatment is better for improving CEC, exchange sodium and ESP. Organic fertilizer treatment is best for improving organic matter, active organic matter, available NPK. Respectively enhance1.97g·kg-1、0.97g·kg-1、20mg·kg-1、9mg·kg-1、11.33mg·kg-1.Furfural residue treatment is better for improving organic matter, active organic matter, available NPK. Respectively enhance1.33g·kg-1、0.76g·kg-1、17mg·kg-1、7mg·kg-1、17.30mg·kg-1. Organic fertilizer treatment and furfural residue treatment are the best for improving soil enzyme activity. Activities of peroxidase and catalase compared with CK reached significance level of difference, activity of urease compared with CK reached very significance level of difference.This experiment aim was to find a best topsoil modified technology,obtained a set of economically viable topsoil modified mode for improving saline-alkali soil. Organic fertilizer treatment is the best of all agricultural improvement. Furfural residue treatment is the best of all chemical modification methods.