摘要： 在两种栽培模式下研究了谷子体内干物质的积累、分配及对子粒的作用.结果表明,在谷子生育期间总干物质积累存在着缓慢增长期、直线增长期和复缓增长期3个阶段.不同时期干物质分配中心各异.在总干物质中,开花前积累量约占55%～0%,花前光合产物对穗粒贡献率大约为8%～10%.营养器官在生育后期干重有回升现象.不同栽培模式,主要影响其干物质总量大小,高产模式总干重明显高于中产模式,其中,差异最大的是叶片和穗粒干重.

关键词: 谷子, 干物质, 积累与分配, 栽培模式

Abstract: With two dif ferent cult ivat ion models, the accumulat ion and part ition of dry materials and function to g rains in fox tail millet are studied. The result s show ed that there are 3 periods for accumulat ion of dry materials in the w hole grow th period, slow ly increasing period, linear increas ing period and repeated slow ly increasing period during the grow ing period of foxtail millet . In dif ferent period, the distribut ion center of dry materials is various. In total dry materials, the accumu lat ion quant ity is about 55%~ 60% before blooming. T he cont ribut ion of photosynthesis product s to ear g rain w as about 8%~ 10% . During the later grow th period, dry w eight of vegetat ive organ rose ag ain. As for cult ivat ion models the total dry materials amount is affected. The total dry w eight of high yielding model is obviously higher than that of medium yielding model w ith large difference presenting in dry materials of leaf and ear w eight.

Key words: Foxtail millet, Dry materials, Accumulat ion and distribut ion, Cultivat ion model

中图分类号: 

• S515.01