麦秸对大豆植株氮素变化和转运的影响

１９９２～１９９３年采用盆栽试验，研究了施用麦秸对大豆生育期中氮素变化及籽实形成期间氮素转运的影响。试验结果表明，施用麦秸，特别是在氮肥基础上施用麦秸使植株各部位全氮增加，并使植株各部位吸氮量高峰出现时间向后推移，同时提高了叶部吸氮量占植株总吸氮量的比率。施用麦秸使成熟期大豆植株的氮素表现转运率比未施麦秸处理提高２４．７４％，其中叶部提高１５．７３％；施麦秸处理大豆籽实中再转运氮占籽实总氮的百分率比未施麦秸处理提高１４．７８％，并提高了大豆籽实的吸氮总量。

THE EFFECT OF FERTILIZING WHEAT STRAW TO ACCMULATING AND TRANSPORTING OF NITROGEN IN SOYBEAN PLANT

The effect of fertilizing wheat straw to nitrogen tranrsporting seed were setting up and nitrogen chauging in soybean plant growiug were studied in tops experments during 1992 1993.Results showed that fertilizing wheat straw make the total nitrogen content increase in eyery parts of plant, especialy after fertilize nitrogen were applied. It will also make the summit time of absorbing nitrogen that leaves by whole plant will be increased. In contrast with the treatment of no wheat were applied, fertilizing wheat staw will make the nitrogen translation ratio go beyond 24.7% in whole plant,and 15.73% in leaves in mature time. In addition the speed of the re-used nitrogen versus total nitrogea go beyond 14.78%. The total quantity or soybe an seed absorbed nitrogen were increased too.