[Objectives] A field experiment was carried out with biogas manure replacing partial chemical fertilizer to discuss the effects on growth and development of summer maize and soil environment,so as to provide theoretic...[Objectives] A field experiment was carried out with biogas manure replacing partial chemical fertilizer to discuss the effects on growth and development of summer maize and soil environment,so as to provide theoretical basis for efficient utilization and zero growth of chemical fertilizer. [Methods]The summer maize field experiment was carried out in Muping District,Yantai City,with conventional fertilization as control,and sole application of biogas manure,biogas manure ＋ 80% chemical fertilizer and biogas manure ＋ 60% chemical fertilizer as three treatments. Growth indices,yield and yield components of summer maize and soil nutrient utilization status were determined. [Results] On the basis of reduced fertilizer application,the application of biogas manure could significantly promote growth of summer maize,and its plant height,stem diameter,ear position and dry weight per plant significantly increased compared with the CK. Remarkable yield increasing effect was obtained on summer maize,and among the various treatments,treatment BM ＋ CF80 had the highest yield,which was 19. 91% higher than the CK. Furthermore,the combined application of biogas manure and chemical fertilizer not only could improve soil acidity（ soil pH was improved by 0. 12 unit）,but also could improve soil rapidly available potassium content and reduce soil alkali-hydrolyzable nitrogen content. [Conclusions]Comprehensively,combined application of biogas manure and 80% of chemical fertilizer is the best for growth and development of summer maize and improvement of soil character.展开更多
Biogas production is a well-established technology primarily for the generation of renewable energy and also for the valorization of organic residues. Biogas is the end product of a biological mediated process, the so...Biogas production is a well-established technology primarily for the generation of renewable energy and also for the valorization of organic residues. Biogas is the end product of a biological mediated process, the so called anaerobic digestion, in which different microorganisms, follow diverse metabolic pathways to decompose the organic matter. The process has been known since ancient times and was widely applied at domestic households providing heat and power for hundreds of years. Nowadays, the biogas sector is rapidly growing and novel achievements create the foundation for constituting biogas plants as advanced bioenergy factories. In this context, the biogas plants are the basis of a circular economy concept targeting nutrients recycling, reduction of greenhouse gas emissions and biorefinery purposes. This review summarizes the current state-of-the-art and presents future perspectives related to the anaerobic digestion process for biogas production. Moreover, a historical retrospective of biogas sector from the early years of its development till its recent advancements gives an outlook of the opportunities that are opening up for process optimisation.展开更多
基金Supported by Key Research and Development Project of Shandong Province(2016DJ11A07)
文摘[Objectives] A field experiment was carried out with biogas manure replacing partial chemical fertilizer to discuss the effects on growth and development of summer maize and soil environment,so as to provide theoretical basis for efficient utilization and zero growth of chemical fertilizer. [Methods]The summer maize field experiment was carried out in Muping District,Yantai City,with conventional fertilization as control,and sole application of biogas manure,biogas manure ＋ 80% chemical fertilizer and biogas manure ＋ 60% chemical fertilizer as three treatments. Growth indices,yield and yield components of summer maize and soil nutrient utilization status were determined. [Results] On the basis of reduced fertilizer application,the application of biogas manure could significantly promote growth of summer maize,and its plant height,stem diameter,ear position and dry weight per plant significantly increased compared with the CK. Remarkable yield increasing effect was obtained on summer maize,and among the various treatments,treatment BM ＋ CF80 had the highest yield,which was 19. 91% higher than the CK. Furthermore,the combined application of biogas manure and chemical fertilizer not only could improve soil acidity（ soil pH was improved by 0. 12 unit）,but also could improve soil rapidly available potassium content and reduce soil alkali-hydrolyzable nitrogen content. [Conclusions]Comprehensively,combined application of biogas manure and 80% of chemical fertilizer is the best for growth and development of summer maize and improvement of soil character.
文摘Biogas production is a well-established technology primarily for the generation of renewable energy and also for the valorization of organic residues. Biogas is the end product of a biological mediated process, the so called anaerobic digestion, in which different microorganisms, follow diverse metabolic pathways to decompose the organic matter. The process has been known since ancient times and was widely applied at domestic households providing heat and power for hundreds of years. Nowadays, the biogas sector is rapidly growing and novel achievements create the foundation for constituting biogas plants as advanced bioenergy factories. In this context, the biogas plants are the basis of a circular economy concept targeting nutrients recycling, reduction of greenhouse gas emissions and biorefinery purposes. This review summarizes the current state-of-the-art and presents future perspectives related to the anaerobic digestion process for biogas production. Moreover, a historical retrospective of biogas sector from the early years of its development till its recent advancements gives an outlook of the opportunities that are opening up for process optimisation.
