[Objective] The objective of this study was to investigate the effects of different agricultural managements on soil microbial population,activity,functional diversity and soil enzyme activity in continuous mono-cropp...[Objective] The objective of this study was to investigate the effects of different agricultural managements on soil microbial population,activity,functional diversity and soil enzyme activity in continuous mono-cropping field of strawberry.[Method]A field plot experiment was carried out to evaluate characteristics of soil microbial community by soil enzyme analysis,microbial cultivation and Biolog analysis.[Result]The results showed that bacteria population proportion,the ration of bacteria to fungi,microorganism amount,AWCD,soil dehydrogenase activity,the Shannon,Simpson,and Mcintosh indices of soil microbial communities were obviously increased under strawberry-rice rotation,soil solarization with rice bran,and calcium cyanamide（CaCN2）treatments,in addition,soil urease activity was significantly increased under strawberry-rice rotation and soil solarization with rice bran treatment,when compared with no fertilization.When compared with conventional fertilization treatment,strawberry-rice rotation and soil solarization with rice bran both significantly increased AWCD and Mcintosh index of soil microbial communities,meanwhile respectively increased soil urease and dehydrogenase activity.PCA analyses suggested that carbon utilization of soil microbial communities under strawberry-rice rotation,soil solarization with rice bran,and calcium cyanamide treatment was obviously different from that of conventional fertilization and no fertilization treatment.[Conclusion] strawberry-rice rotation and soil solarization with rice bran were effective agricultural managements to control soil biological degradation under Continuous Cropped Strawberry.展开更多
Dahu, a small township in northern Taiwan, is famous for its produce of strawberries. Near Dahu, there are some attractions, such as hot springs, native Taiwan Residents tribes and a national park named Shei-pa. In or...Dahu, a small township in northern Taiwan, is famous for its produce of strawberries. Near Dahu, there are some attractions, such as hot springs, native Taiwan Residents tribes and a national park named Shei-pa. In order to better support more small businesses in this area, the local government is eager to promote an industrial cluster of agriculture and tourism based on the well-developed strawberry farms. In this research, the authors investigated 200 strawberry farmers to examine forming factors of the cluster, and effects of cluster on organizational performance. The findings are firstly, capital resource is regarded as the most effective forming factor of the cluster. Secondly, institutionalization, interaction mechanism and knowledge flow positively intermediate the clustering effects on organizational performance. These findings have important implications for the local government and the businesses as well.展开更多
基金Supported by the National Science and Technology Funds for Agriculture(2009GB24910540)Special fund for National Public Service Sectors(Agriculture)Research(200903011)+1 种基金Natural Science Fund Project of Hohai University(2008429811)Central University Basic Research Operating Expenses Project(2010B05314)~~
文摘[Objective] The objective of this study was to investigate the effects of different agricultural managements on soil microbial population,activity,functional diversity and soil enzyme activity in continuous mono-cropping field of strawberry.[Method]A field plot experiment was carried out to evaluate characteristics of soil microbial community by soil enzyme analysis,microbial cultivation and Biolog analysis.[Result]The results showed that bacteria population proportion,the ration of bacteria to fungi,microorganism amount,AWCD,soil dehydrogenase activity,the Shannon,Simpson,and Mcintosh indices of soil microbial communities were obviously increased under strawberry-rice rotation,soil solarization with rice bran,and calcium cyanamide（CaCN2）treatments,in addition,soil urease activity was significantly increased under strawberry-rice rotation and soil solarization with rice bran treatment,when compared with no fertilization.When compared with conventional fertilization treatment,strawberry-rice rotation and soil solarization with rice bran both significantly increased AWCD and Mcintosh index of soil microbial communities,meanwhile respectively increased soil urease and dehydrogenase activity.PCA analyses suggested that carbon utilization of soil microbial communities under strawberry-rice rotation,soil solarization with rice bran,and calcium cyanamide treatment was obviously different from that of conventional fertilization and no fertilization treatment.[Conclusion] strawberry-rice rotation and soil solarization with rice bran were effective agricultural managements to control soil biological degradation under Continuous Cropped Strawberry.
文摘Dahu, a small township in northern Taiwan, is famous for its produce of strawberries. Near Dahu, there are some attractions, such as hot springs, native Taiwan Residents tribes and a national park named Shei-pa. In order to better support more small businesses in this area, the local government is eager to promote an industrial cluster of agriculture and tourism based on the well-developed strawberry farms. In this research, the authors investigated 200 strawberry farmers to examine forming factors of the cluster, and effects of cluster on organizational performance. The findings are firstly, capital resource is regarded as the most effective forming factor of the cluster. Secondly, institutionalization, interaction mechanism and knowledge flow positively intermediate the clustering effects on organizational performance. These findings have important implications for the local government and the businesses as well.
