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对皖南烟区烤烟干物质和养分积累规律进行了研究,结果表明烟苗移栽后30d内烟株干物质积累较少,仅占总积累量的3%;移栽后31～75d,烟株干物质积累量达到总积累量的69%;移栽后75d至采收,干物质积累量占总积累量的28%。在烟株生长发育早期,干物质在叶后中分布比例较高,栽后75d趋于相对稳定,根、茎、叶的干物质重分别约占全株干重的14%、32%和54%。烟株移栽后30d至75d时氮、磷、钾、氯、镁、锰、锌、铜的积累量分别占总积累量的69 18%、56 66%、79 82%、58 54%、73 75%、48 03%、53 28%、71 06%。
The results showed that the dry matter accumulation of tobacco plants was less than 30% within 30 days after transplanting, accounting for only 3% of the total accumulation. After 31-75 days after transplanting, the tobacco plants The dry matter accumulation reached 69% of the total accumulation. After 75 days after transplanting, the dry matter accumulation accounted for 28% of the total accumulation. At the early stage of tobacco plant growth, the dry matter content was higher in the postembryonic leaf, which was relatively stable at 75 days after transplanting, and the dry matter weights of roots, stems and leaves accounted for about 14%, 32% and 54% of the whole plant dry weight respectively %. The accumulative amounts of nitrogen, phosphorus, potassium, chloride, magnesium, manganese, zinc and copper accounted for 69 18%, 56 66%, 79 82%, 58 54%, 73 75%, 48 03%, 53 28%, 71 06%.