摘要： 对2种类型饲用玉米在不同栽培密度条件下光合产物生产和运转情况进行了研究。结果表明，青贮型玉米科多8号偏重于营养生长，其叶面积指数、干物质积累量大，二者随密度的变化其变幅较大；粮饲兼用型玉米陕单310偏重于生殖生长，其叶面积指数、干物质积累量较小，密度对其影响较小，耐密植。密度对2种类型玉米光合产物在器官中的分配比例及器官中光合产物的转运性能具有调节作用。科多8号和陕单310光合产物转移率较大的器官分别是叶片和茎秆。

关键词: 饲用玉米, 密度, 光合产物, 积累, 转运

Abstract: Using the two varieties with the different type forage corn,their photosynthesis products and transformations under the different density were studied.The results showed the silage corn Keduo 8 laid particular stress on vegetable growth,it had larger LAI and higher biomass,there were bigger changed range between LAI and biomass;the dual purpose corn Shandan 310 laid particular stress on reproductive growth,it had smaller LAI and lower biomass,there were a littler effect of density on LAI and biomass.The density had regulation ability to the distribute ratio and transformation traits of photosynthesis product organs of two different types forage corn.The higher transformation ratios of photosynthesis product organs about Keduo 8 and Shandan 310 were respectively leaf and stem.

Key words: Forage corn, Density, Photosynthesis product, Accumulation, Transformation

中图分类号: 

• S513.01