追肥灌水量对成熟期烤烟叶片生长的影响

Effects of Additional Fertilizer with Different Water Quantity on Growth of Flue Cured Tobacco Leaves at Maturity Stage

采用田间避雨栽培,以不灌水为对照,研究了在相对湿润(垄体含水量60%)和相对干旱(垄体含水量54%)条件下,追肥灌水量(0.5~3.0 kg/株)对烤烟成熟期叶片生长的影响。结果表明,60%垄体含水量时,追肥灌水量0.5~1.0 kg/株处理不能增加干物质量,但可增加叶面积,且以灌水量1.0 kg/株处理叶片的开片度最大。54%垄体含水量时,追肥灌水量0.5~2.0 kg/株时,烟株干物质量增加2.76%~20.60%,而叶面积则以灌水量2.0 kg/株处理最大。追肥灌水量的增加抑制了上部叶和下部叶的干物质的累积以及下部叶面积的增加。垄体含水量的减少有利于中部烟叶干物质量累积以及整个烟株叶面积的增加,但减少了叶片的开片度。

A field with rain shelter cultivation was carried out to study the effect of additional fertilizer with different water quantity on growth of flue cured tobacco leaves at maturity stage under 60% and 54% water content of ridge,which compared to without water application. The results showed that when the water content of ridge was 60% ,the additional fertilizer with 0.5-1.0kg water per plant could not improve dry matter quantity,but could increase leaves area,in addition the biggest leaf openness was obtained by additional fertilizer with 1.0 kg water per plant. When the water content of ridge was 54%,dry matter quantity increased by 2.76%-20.60% with additional fertilizer with 0.5-2.0 kg water per plant, and the biggest leaf area was obtained by additional fertilizer with 2.0 kg water per plant. The increase of additional fertilizer with water quantity inhibited the accumulation of upper and bottom leaves dry matter quantity and the increase of bottom leaves area. The reduction of water content of ridge was good at the accumulation of middle leaves dry matter quantity and the increase of leaves area of all plant, but reduced the leaf openness.