利用宁夏筛选的17个小种生理的稻瘟病菌混和菌对即将走向生产的11份材料分别在苗期、成株期接种,鉴定其在不同生育期的抗瘟性,并用筛选出的5个宁夏稻瘟病菌代表菌系进行抗谱测定。结果表明:抗性强、抗谱宽的材料有3份:玉优1号、2000-6、...利用宁夏筛选的17个小种生理的稻瘟病菌混和菌对即将走向生产的11份材料分别在苗期、成株期接种,鉴定其在不同生育期的抗瘟性,并用筛选出的5个宁夏稻瘟病菌代表菌系进行抗谱测定。结果表明:抗性强、抗谱宽的材料有3份:玉优1号、2000-6、2002 XW-913;抗性较强、抗谱较宽的材料有2份:优育7号、农院238,可作抗病亲本和抗源材料应用于育种;抗谱中抗型的材料有4份:花87、吉特605、吉特624、吉生286;抗性较弱、抗谱较窄的材料有2份:G 45、吉2002 L 120。展开更多
[Objective] This study aimed to investigate the feasibility of agricultural irri- gation with reclaimed water in Urumqi City. [Method] Chinese cabbages were used as experimental materials and irrigated with control wa...[Objective] This study aimed to investigate the feasibility of agricultural irri- gation with reclaimed water in Urumqi City. [Method] Chinese cabbages were used as experimental materials and irrigated with control water, 50% reclaimed water and 100% reclaimed water, and then the number of endophytic bacteria in Chinese cab- bages was measured. [Result] Using 50% reclaimed water, the fresh weight of Chi- nese cabbage was improved by 68.94%; however, with the deepening internalization of exogenous microorganism internalization, the total number of endophytic bacteria and coliform flock in Chinese cabbages treated with 50% reclaimed water was sig- nificantly higher than the other two treatment groups （P〈0.05）. [Conclusion] Re- claimed water enhances both the weight of Chinese cabbage and the number of endophytic bacteria, which is unsuitable for irrigation of edible crops such as Chi- nese cabbage. Strengthening disinfection during the process of sewerage treatment could solve this problem.展开更多
One of the biggest problems responsible of the nonrenewable resources depletion and environmental issues is the construction industries,which generates large amounts of mineral waste and harmful emitted gases.Therefor...One of the biggest problems responsible of the nonrenewable resources depletion and environmental issues is the construction industries,which generates large amounts of mineral waste and harmful emitted gases.Therefore,these problems generated the necessity to search for alternative natural building materials based on renewable resources.To study the mechanical characteristics and microstructural behavior of the concrete reinforced by raw wheat straw basalt fiber composite(RWSBFc),and treated rice straw basalt fiber composite(TRSBFc),a number of experimental tests were carried out with different composites ratios.Concrete compressive strength,splitting tensile strength,and flexural strength tests were considered as main parameters.The results showed that the RWSBFC has a positive effect on concrete flexural strength by increasing of 12.58%,compared with control samples.Also,it showed good enhancement in concrete flexibility and ductility.In contrast,both RWSBFc and TRSBFc showed uneven deterioration in concrete compressive strength and splitting tensile strength.To avoid the deterioration in compressive strengths of the various composites types,some improvement methods such as processors for the used straw,and adding some additives were recommended.展开更多
文摘利用宁夏筛选的17个小种生理的稻瘟病菌混和菌对即将走向生产的11份材料分别在苗期、成株期接种,鉴定其在不同生育期的抗瘟性,并用筛选出的5个宁夏稻瘟病菌代表菌系进行抗谱测定。结果表明:抗性强、抗谱宽的材料有3份:玉优1号、2000-6、2002 XW-913;抗性较强、抗谱较宽的材料有2份:优育7号、农院238,可作抗病亲本和抗源材料应用于育种;抗谱中抗型的材料有4份:花87、吉特605、吉特624、吉生286;抗性较弱、抗谱较窄的材料有2份:G 45、吉2002 L 120。
基金Supported by National Natural Science Foundation of China(Grant No.30960178)Natural Science Foundation of Xinjiang Province(Grant No.200821126)~~
文摘[Objective] This study aimed to investigate the feasibility of agricultural irri- gation with reclaimed water in Urumqi City. [Method] Chinese cabbages were used as experimental materials and irrigated with control water, 50% reclaimed water and 100% reclaimed water, and then the number of endophytic bacteria in Chinese cab- bages was measured. [Result] Using 50% reclaimed water, the fresh weight of Chi- nese cabbage was improved by 68.94%; however, with the deepening internalization of exogenous microorganism internalization, the total number of endophytic bacteria and coliform flock in Chinese cabbages treated with 50% reclaimed water was sig- nificantly higher than the other two treatment groups （P〈0.05）. [Conclusion] Re- claimed water enhances both the weight of Chinese cabbage and the number of endophytic bacteria, which is unsuitable for irrigation of edible crops such as Chi- nese cabbage. Strengthening disinfection during the process of sewerage treatment could solve this problem.
基金supported in part by the Priority Academic Program Development of Jiangsu Higher Education Institutions under Grant 1105007002.
文摘One of the biggest problems responsible of the nonrenewable resources depletion and environmental issues is the construction industries,which generates large amounts of mineral waste and harmful emitted gases.Therefore,these problems generated the necessity to search for alternative natural building materials based on renewable resources.To study the mechanical characteristics and microstructural behavior of the concrete reinforced by raw wheat straw basalt fiber composite(RWSBFc),and treated rice straw basalt fiber composite(TRSBFc),a number of experimental tests were carried out with different composites ratios.Concrete compressive strength,splitting tensile strength,and flexural strength tests were considered as main parameters.The results showed that the RWSBFC has a positive effect on concrete flexural strength by increasing of 12.58%,compared with control samples.Also,it showed good enhancement in concrete flexibility and ductility.In contrast,both RWSBFc and TRSBFc showed uneven deterioration in concrete compressive strength and splitting tensile strength.To avoid the deterioration in compressive strengths of the various composites types,some improvement methods such as processors for the used straw,and adding some additives were recommended.
