Effects Of Organic Fertilizer And Biochar On Crop Production,Nitrogen And Phosphorus And Nutrient Loss And Utilization In Dryland

In order to investigate the impact of organic fertilizers and bio-BC Fertilizers on dry-land nutrient loss and dry-land crop growth, and to further explore effective ways of dry-land crops by applying fertilizer and high-yielding and effective planting and agricultural waste resource utilization, we made long-term field plot experiments with corn-cabbage rotation. The experiment was made by five treatments,including no fertilizer treatment, chemical fertilizer treatment, chemical fertilizer and added bio-BC treatment, organic and inorganic fertilizer treatment, organic and inorganic fertilizer and added bio-BC treatment. It discussed the the effects of combined application of organic and inorganic and adding bio-BC on dry-land nitrogen and phosphorus runoff losses, crop utilization of nitrogen and phosphorus fertilizer, yield and quality of crops. The results are as follows:1?Compared with chemical fertilization treatment, chemical fertilizer and added bio-BC treatment as well as organic and inorganic fertilizer can significantly reduce the loss of dry-land nitrogen and phosphorus runoff surface. Compared with organic and inorganic fertilizer treatment, combined application of organic and inorganic with bio-BC can significantly reduce the various forms of nitrogen runoff loss, however, the effects to reduce various forms of phosphorus runoff losses was not obvious. It explained that treatments added bio-BC can promote the increase of soil nitrogen holding capacity.2?Corns' nitrogen, phosphorus utilization of organic and inorganic fertilizer and added bio-BC treatment apparently higher than other fertilization treatments. It showed that organic and inorganic fertilizer and added bio-BC treatment was more conducive to the accumulation of corn nitrogen and phosphorus nutrients. The aboveground nitrogen and phosphorus accumulation amount of Cabbage in organic and inorganic fertilizer treatment was the highest among other treatments, which showed that organic and inorganic fertilizer treatment was more effective in improving cabbage fertilization of nitrogen and phosphor utilization. Organic and inorganic fertilizer treatment or added bio-BC treatment can help to reduce the amount of chemical fertilizer, to promote nitrogen and phosphorus accumulation of corn and cabbage and to improve their fertilizer utilization.3?Organic and inorganic fertilizer treatment can help to improve the agronomic traits of corn, however, organic and inorganic fertilizer and added bio-BC treatment can increase the content of sugar and amino acid in cabbages. Compared with chemical fertilization treatment, the content of soluble sugars of organic and inorganic fertilizer treatment increased by 44.22%, the content of amino acids of organic and inorganic fertilizer and added bio-BC treatment increased by 26.24%, the output of corn and cabbage of organic and inorganic fertilizer and added bio-BC treatment increased respectively by 13.65%,74.37%.4?Compared with organic and inorganic fertilizer treatment, combined application of organic and inorganic with bio-BC can effectively increase soil content of total nitrogen, alkali-hydrolyzable nitrogen, available potassium, organic matter by 0.52%,1.46%, 2.05%,8.04%,1.06%?14.95% during corn planting period.Combined application of organic and inorganic with bio-BC can effectively increase soil content of alkali-hydrolyzable nitrogen, available potassium, available potassium, total phosphorus by 5.63%?7.27%? 6.12%?2.5% during cabbage planting period. The organic matter increased by 30.12% than chemical fertilizer treatment, which achieved 21.24g/kg. It showed that organic fertilizer and bio-BC had significant influence on promoting the growth of soil organic. It also showed that combined application of organic and inorganic with bio-BC was the ideal pattern of soil fertility balanced growth.