【摘要】 合丰２５（亚有限）、荆山朴（无限）和绿秣食豆（半野生）３种不同类型大豆干物质及氮的积累和分配存在明显差异。合丰２５在整个生育期间茎叶及全株干物质积累量小，但后期营养器官干物质及氮向籽粒转移效率高，因而收获指数最高。绿秣食豆全株干物质积累量在供试材料中最高，但其叶部干物质积累比例过大，收获指数最低。荆山朴居中。无论何种品种类型及生态条件，大豆经济产量与生物产量呈极显著正相关，并有随着肥力水平提高，相关系数降低的趋势。在土壤肥力水平高的条件下，大豆经济产量与粒茎比、收获指数呈极显著正相关。在肥力水平中等及瘠薄土壤条件下，大豆经济产量与非经济器官重呈显著正相关。更多还原

【Abstract】 There were obvious difference of nitrogen and dry matter accumulation and distribution among three different types of soybean Hefeng 25,Jingshanpu and Meshidou.Although Hefeng 25 had the lowest leaf,stem and plant dry matter accumulation at the growing stage,it had the highest transferring efficiency of dry matter and nitrogen from nutrient organ to the seed,and had the highest harvest index at the later growing stage,Lumeshidou had the highest plant dry matter accumulation but with the much higher leaf dry matter accumulation ratio,it had the lowest harvest index, Jingshanpu was intermediate between Hefeng25 and Lumeshidou.Regardless of the type of varieties and ecological condition,the ecological yield has significant passive correlation between seed-stem ratio and harvest index in the fertile soil,and yield had possitive correlation with noneconomical organ weight in the impoverished soil.更多还原