[Objective] The aim was to provide theoretical basis for the prevention and control of the invasion of Alternanthera philoxeroides（Mart.）Griseb.[Method] Effects of fragmentation intensity of fresh roots and their bu...[Objective] The aim was to provide theoretical basis for the prevention and control of the invasion of Alternanthera philoxeroides（Mart.）Griseb.[Method] Effects of fragmentation intensity of fresh roots and their burial depth on sprouting and early growth of A.philoxeroides were studied by control test.[Result] More sprouts of A.philoxeroides emerged when the fragmentation intensity of fresh roots was higher,while if the fragmentation intensity of fresh roots was lower,the early growth of A.philoxeroides was more rapid.The soil buried depth had significant effect on fresh root sprouts＇ emergence,but once fresh root sprouts could reach the soil surface and were given enough growth time,even if the fresh roots were buried in different depths,soil buried depth had no significant effect on its young plant growth.[Conclusion] If different fragmentation intensities of fresh roots present,there is a kind of trade-off strategy between root sprouts＇ emergence and plant＇ early growth,by which A.philoxeroides can invade new habitat successfully.To control the invasion of A.philoxeroides,it is critical to prevent its fresh root sprouts from emerging to soil surface,that is,to bury the fresh roots at a further soil depth.展开更多
设计对照组(120 m L接种物)和试验组(120 m L接种物+71 g空心莲子草),采用全混合批量式发酵模式,在中温30℃的条件下,进行沼气发酵试验,研究空心莲子草(Alternanthera philoxeroides Griseb.)的产沼气潜力。结果表明,试验组的沼气发酵历...设计对照组(120 m L接种物)和试验组(120 m L接种物+71 g空心莲子草),采用全混合批量式发酵模式,在中温30℃的条件下,进行沼气发酵试验,研究空心莲子草(Alternanthera philoxeroides Griseb.)的产沼气潜力。结果表明,试验组的沼气发酵历时27 d,净产气量为3 080 m L。由试验结果计算得出,空心莲子草的TS产气潜力为319 m L/g,VS产气潜力为403 m L/g。展开更多
基金Supported by Program from Hubei Education Department(Z200512002)Outstanding Youth Science and Technology Innovation Team Plan Project of Yangtze University~~
文摘[Objective] The aim was to provide theoretical basis for the prevention and control of the invasion of Alternanthera philoxeroides（Mart.）Griseb.[Method] Effects of fragmentation intensity of fresh roots and their burial depth on sprouting and early growth of A.philoxeroides were studied by control test.[Result] More sprouts of A.philoxeroides emerged when the fragmentation intensity of fresh roots was higher,while if the fragmentation intensity of fresh roots was lower,the early growth of A.philoxeroides was more rapid.The soil buried depth had significant effect on fresh root sprouts＇ emergence,but once fresh root sprouts could reach the soil surface and were given enough growth time,even if the fresh roots were buried in different depths,soil buried depth had no significant effect on its young plant growth.[Conclusion] If different fragmentation intensities of fresh roots present,there is a kind of trade-off strategy between root sprouts＇ emergence and plant＇ early growth,by which A.philoxeroides can invade new habitat successfully.To control the invasion of A.philoxeroides,it is critical to prevent its fresh root sprouts from emerging to soil surface,that is,to bury the fresh roots at a further soil depth.
文摘设计对照组(120 m L接种物)和试验组(120 m L接种物+71 g空心莲子草),采用全混合批量式发酵模式,在中温30℃的条件下,进行沼气发酵试验,研究空心莲子草(Alternanthera philoxeroides Griseb.)的产沼气潜力。结果表明,试验组的沼气发酵历时27 d,净产气量为3 080 m L。由试验结果计算得出,空心莲子草的TS产气潜力为319 m L/g,VS产气潜力为403 m L/g。
