不同烤烟品种干物质的积累动态

Dynamic Accumulation of Dry Matter in Different Flue-cured Tobacco Varieties

为研究大田期烟株的生长发育状况,测定了8个烤烟品种移栽后20、40、60、80、100d的干物质积累量。结果表明:云烟87的根、茎、叶中干物质积累量较高,100d时分别为114、132和207g,相对增长量分别是对照K326的1 39、1 38和1 14倍,相对增长速度分别为1 421、2 145和3 033g/d,根/冠比为0 336。说明在相同栽培管理条件下,云烟87对当地生态条件具有较强的适应性,且有较高的生物学产量。

To study the growth and development of tobacco plants in field,the rates of dry matter accumulation in eight flue-cured tobacco varieties were determined at 20,40,60,80 and 100 days after transplanting.The result showed that the dry matter content in roots,stalks and leaves of cv.Yunyan 87 was the highest,which was 114,132 and 207g,respectively (determined at the 100th day after transplanting), amounted to 1.39,1.38 and 1.14 times as much as that of K326.The average (increase) rate was 1.421,2.145 and 3.033g/d, respectively,and the weight ratio of dry matter in root to that in stalk and leaves was 0.336.The results suggested that Yunyan 87 had better adaptability and higher biological yield.