Study On The Improvement Of Saline-alkali Soil By Bio-organic Fertilizer

Saline soil refers to the accumulation of excess salt ions,and these salt ions have affected the normal growth of the plant soil.Excessive soil salt ions not only cause damage to soil structure,but also cause damage to crop root cells by infiltration of water,resulting in poor crop development.There are many ways to manage saline soils,including chemical methods,physical methods,and biological methods.The biological method is mainly to use organic organic fertilizer for organic improvement,in which the use of microbial agents and organic fertilizer for organic combination of salt and alkali to improve the method is the improvement of saline land research hot.Inthisstudy,halophilicsoils,cellulose-degradingmicroorganismsand phosphorus-solubilizing microorganisms were screened from saline soils in organic soils,and organic organic fertilizers were combined with organic manure.To carry out the improvement of saline soil.A few strains of halophilic bacteria were screened from sodium chloride?NaCl?as the main components of the medium in the Bohai granary,and several strains of cellulose degrading bacteria were screened with the main carbon source of wheat straw as the medium and the contents of tricalcium phosphate?Ca₃?PO₄?₂?and hydroxyapatite(Ca₁₀?PO₄?₆?OH?₂)were selected as the main phosphorus source.Laboratory function to verify its function and after the safety evaluation for field experiments.The study also selected two crops-winter wheat and maize as indicative crops.Daejeon experimented with the application of fertilizer is mainly slow conventional fertilizer,bio-organic fertilizer.2015 winter wheat field experiment set four groups of treatment.2016 years of corn and winter wheat field experimental treatment set six groups of treatment results are the following:?1?Screening of 5 strains with halophilic strains,of which S3 strains of the highest halophilic efficiency,reaching 34.65%,screening to 6 of the better effect of cellulose degradation bacteria,which C1 strains of cellulase production of the highest,reaching 316.75U/mL.Four strains were hydrolyzed with hydroxyapatite as the substrate.The effect of P5strain was the best,the effect of phosphorus treatment was 257.014mg/mL,and the pH value decreased from 7.50 to 4.27.The results showed that 8P had the best effect,the effect of phosphorus was 225.568 mg/mL,and the pH value decreased from 7.50 to 4.19.?2?According to the 2015 winter wheat set up four treatment,In terms of the actual yield we have obtained organic fertilizer and slow release fertilizer?T3?compared with conventional fertilization?T2?,the yield of organic fertilizer and slow-release fertilizer?T4?and conventional fertilization?T2?were higher than that of conventional fertilization?T2?Compared with the increase of 64.61%;in 2015 winter wheat in the soil bulk density treatment T3,T4 was significantly reduced,on the contrary T2 has an increasing trend.In T2winter wheat rhizosphere soil salinity and pH,T2 treatment has an increasing trend,while T3,T4 treatment has significantly reduced the role.In the soil nutrients,T3,T4 also significantly increased the role of rhizosphere soil nutrients.It can be explained that the application of bio-organic fertilizer has a significant effect on the yield of winter wheat,and the improvement of saline soil environment is also helpful.?3?Six experimental treatments were set up in 2016.The experimental results were obtained in the study of maize and winter wheat.The experimental results were similar to those obtained when the winter wheat was planted in 2015.After the mixed use of organic fertilizer and slow-release fertilizer Crop yield,soil physical and chemical indicators and other parameters of the experimental results are better.After the application of microbial agents on the soil environment and crop yield have a certain effect.With the increase in the amount of organic fertilizer applied,increased to 222kg of every acre when the best results.According to the study,conventional fertilization on the Bohai granary saline soil in the cultivation of winter wheat and corn have a certain yield.After the application of bio-organic fertilizer,the yield of winter wheat and maize grown in saline-alkali soil increased significantly,which was significantly different from that of conventional winter wheat or maize.In the saline soil structure and soil environment plays a significant role in improving.In this experiment,the soil bulk density,salinity soil salt content,pH of saline soil,nutrient elements in saline soil and microbial community in saline soil were studied.Conventional application of slow release fertilizer to increase the degree of soil compaction,the physical and chemical properties of soil and soil ecological environment have a certain hazard.After applying bio-organic fertilizer,it can obviously improve the environment of saline-alkaline soil,alleviate the soil compaction of saline-alkali soil,increase the number of microorganisms in saline soil and make great help to improve the ecological environment.