Odor pollution in landfill area has attracted more social attention in China. It is very important to control the generation of odor pollutants in situ. Analyzing odorous materials production form buried waste, simula...Odor pollution in landfill area has attracted more social attention in China. It is very important to control the generation of odor pollutants in situ. Analyzing odorous materials production form buried waste, simulated columns of different volatile solid (VS) content and different buried period waste were designed. Gas compounds produced from the columns were collected and analyzed by comprehensive two-dimensional gas chromatography (GC × GC) method. It has remarkable relationship between VS content and concentrations of odorous material. When VS content more than 40%, the total amount of odorous compounds increases remarkably. It can be inferred that reduced VS content of original waste may effective decreasing odorous materials production in landfill area. The old rubbish produced more odorous compounds than that of fresh one in simulated columns.展开更多
In northwest China,where winter is extremely cold and the grapevine is vulnerable to freezing damage,the application of soil covering has promoted the vigorous development of the local grape and wine industries.Howeve...In northwest China,where winter is extremely cold and the grapevine is vulnerable to freezing damage,the application of soil covering has promoted the vigorous development of the local grape and wine industries.However,in recent years,the negative effects of burying soil for cold protection on the environment have gradually emerged.In some viticultural regions,the phenomenon of"summer forest,winter desert"has appeared.Therefore,it is urgent for the Chinese grape industry to find a better solution to overwinter safely and environmentally friendly.This review summarizes the advantages and disadvantages of widely used solutions to overwinter such as covering vines with soil,breeding of cold-resistant grapes,cold-resistant cultivation model,physical and chemical covering materials,and protected grape facilities were reviewed.Future overwintering measures were proposed which avoid burial and grape overwintering research directions.It also provides a theoretical foundation and technical support to improve grape yield and quality in northwest China.展开更多
为了解决兰州百合鳞茎越冬储藏难的问题,本研究采用坑道式贮藏法对兰州百合鳞茎进行越冬储藏试验,试验设35、40、45、50 cm 4个埋藏深度,通过测定鳞茎的腐烂效果和生长发育情况,探讨不同埋藏深度对鳞茎越冬储藏的影响。结果表明:随着埋...为了解决兰州百合鳞茎越冬储藏难的问题,本研究采用坑道式贮藏法对兰州百合鳞茎进行越冬储藏试验,试验设35、40、45、50 cm 4个埋藏深度,通过测定鳞茎的腐烂效果和生长发育情况,探讨不同埋藏深度对鳞茎越冬储藏的影响。结果表明:随着埋藏深度的增加,鳞茎总腐烂率和腐烂指数呈递增趋势;在埋藏深度为40 cm时,鳞茎水分散失量最低,根系活力、可溶性糖含量、游离脯氨酸含量、超氧化物歧化酶和过氧化物酶活性均显著高于其他处理。因此,兰州百合鳞茎越冬储藏时,最佳埋藏深度为40 cm,该埋藏深度贮藏的鳞茎重量衰减幅度小且发病率低。展开更多
文摘Odor pollution in landfill area has attracted more social attention in China. It is very important to control the generation of odor pollutants in situ. Analyzing odorous materials production form buried waste, simulated columns of different volatile solid (VS) content and different buried period waste were designed. Gas compounds produced from the columns were collected and analyzed by comprehensive two-dimensional gas chromatography (GC × GC) method. It has remarkable relationship between VS content and concentrations of odorous material. When VS content more than 40%, the total amount of odorous compounds increases remarkably. It can be inferred that reduced VS content of original waste may effective decreasing odorous materials production in landfill area. The old rubbish produced more odorous compounds than that of fresh one in simulated columns.
基金supported by the National key research and development program(2022YFD1602000)the Innovation Capacity Support Plan of Shaanxi Province(2022NY-039,2022ZDLNY04-04,2023-YBNY-176,2023KXJ-171).
文摘In northwest China,where winter is extremely cold and the grapevine is vulnerable to freezing damage,the application of soil covering has promoted the vigorous development of the local grape and wine industries.However,in recent years,the negative effects of burying soil for cold protection on the environment have gradually emerged.In some viticultural regions,the phenomenon of"summer forest,winter desert"has appeared.Therefore,it is urgent for the Chinese grape industry to find a better solution to overwinter safely and environmentally friendly.This review summarizes the advantages and disadvantages of widely used solutions to overwinter such as covering vines with soil,breeding of cold-resistant grapes,cold-resistant cultivation model,physical and chemical covering materials,and protected grape facilities were reviewed.Future overwintering measures were proposed which avoid burial and grape overwintering research directions.It also provides a theoretical foundation and technical support to improve grape yield and quality in northwest China.
文摘为了解决兰州百合鳞茎越冬储藏难的问题,本研究采用坑道式贮藏法对兰州百合鳞茎进行越冬储藏试验,试验设35、40、45、50 cm 4个埋藏深度,通过测定鳞茎的腐烂效果和生长发育情况,探讨不同埋藏深度对鳞茎越冬储藏的影响。结果表明:随着埋藏深度的增加,鳞茎总腐烂率和腐烂指数呈递增趋势;在埋藏深度为40 cm时,鳞茎水分散失量最低,根系活力、可溶性糖含量、游离脯氨酸含量、超氧化物歧化酶和过氧化物酶活性均显著高于其他处理。因此,兰州百合鳞茎越冬储藏时,最佳埋藏深度为40 cm,该埋藏深度贮藏的鳞茎重量衰减幅度小且发病率低。
