Effect on Sisal Growth and Soil Quality by Bio-organic Formulated Fertilizer Replacing Chemical Fertilizer
In order to further explore the increasing yield and efficiency potential of bio-organic for-mula fertilizer as a substitute for chemical fertilizer in sisal planting,three different fertilization treatments were designed on the same plot:applying conventional chemical fertilizer,including 450 kg/hm2 of urea,1500 kg/hm2 of phosphate fertilizer,450 kg/hm2 of potash fertilizer,and 7500 kg/hm2 of organic fertiliz-er(CK);applying 1/2 of conventional chemical fertilizer and 1875 kg/hm2 of sisal bio-organic formula fertilizer(T1);applying 3750 kg/hm2 of sisal bio-organic formula fertilizer(T2).The results showed that compared with CK,the available phosphorus and available potassium contents in the soil of the sisal field under T2 treatment decreased by 31.21 mg/kg and 95.80 mg/kg,respectively,while the contents of alkali-hydrolyzable nitrogen and exchangeable calcium significantly increased by 21.49 mg/kg and 63.42 mg/kg,respectively.In addition,T2 treatment significantly increased the soil microbial biomass carbon and nitrogen contents,which were 17.98 times and 2.06 times those of CK treatment,respective-ly.At the same time,soil acid phosphatase activity was significantly reduced,while sucrose enzyme ac-tivity,urease activity,and peroxidase activity were significantly increased,reaching 1.05 times,1.33 times,and 1.20 times,and 4.39 times,1.38 times,and 1.22 times those of CK treatment,respectively.Furthermore,T2 treatment significantly promoted the absorption and utilization of calcium by sisal,resul-ting in an increase in the fiber content of its leaves by 16.67%and 6.91%in 2021 and 2022,respective-ly,compared with CK treatment.Additionally,T2 treatment could save costs of 1837.50 yuan/hm2 each year,with a total increase in income of 2473.50 yuan/hm2 over two years.Therefore,compared with con-ventional chemical fertilizer(CK),sisal bio-organic formula fertilizer can not only adjust soil nutrient composition,enhance the absorption of calcium by sisal and increase the fiber content of its leaves,but also significantly increase soil microbial biomass carbon and nitrogen contents and enzyme activities,a-chieving the goal of reducing chemical fertilizer use and increasing its efficiency.This provides important reference for sisal production and soil protection.
sisal(Agave sisalana Perr.ex Engelm.)bio-organic formula fertilizersoilgrowproduction benefit
万方数据
维普
