摘要:
对烟草进行施用钙肥盆栽试验,结果表明,烟苗移栽后35 d,土壤交换性钙含量为1 12.33 mgkg-1(Ca7)处理的株高、茎围、叶片数均较多,分别为21.75 cm、3.93 cm和7.75片株-1;烟苗移栽后75 d,以Ca7处理的株高、茎围、最大叶长和最大叶宽均较多,分别为76.70 cm、5.37 cm、37.67 cm和17.00 cm.随着土壤交换性钙含量增加,烟株的生育期相应推迟2～7 d.成熟期烟株的烟叶和烟根干物质重以Ca7处理的最高,分别为50.83 g株-1 和15.13 g株-1.因此,在本试验土壤条件下,土壤交换性钙含量为1 12.33 mgkg-1(Ca7)处理烤烟若干生长发育指标较好.
Abstract:
A pot experiment was conducted to determine the effect of the available calcium content in soil on the growth of flue-cured tobacco.The result indicated that after tobacco seedlings were transplanted for 35 days,the height,stem girth and number of leaves of the tobacco plants treated with Ca7(1142.33 mgkg-1) were improved reaching 21.75cm,3.93cm and 7.75 piece/plant,respectively.After 75 days,the height,stem girth,maximum leaf length and minimum leaf length of the treated tobacco plants were found to be 76.70cm,5.37cm,37.67cm and 17.00cm,respectively.The growth and development period was delayed 2-7 days with the addition of calcium.The dry matters in the leaves and roots of the treated tobacco plants in autumn reached a peak value of 50.83g/plant and 15.13g/plant,respectively.Under the experimental conditions,the growth and development of the flue-cured tobacco in soil with Ca7 at 1142.33 mgkg-1 level were found to be better than the control.
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