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采用盆栽试验,研究6种不同硼肥力土壤施用硼肥对烤烟不同部位对硼的吸收积累和养分吸收的影响。结果表明,1在烤烟生长过程中,叶片对硼、氮和钾的积累量上均表现为团棵期>打顶期;打顶后烟叶叶片对硼、钾含量大小均表现为下部叶>中部叶>上部叶>茎,而氮含量则表现为上部叶>中部叶>下部叶>茎;2土壤有效硼含量在一定值(0.56~0.75 mg/kg)时,烟叶硼、钾、氮含量随土壤硼含量的增加而增加,而高于0.75 mg/kg时,烟叶对硼、钾、氮的积累受到抑制。因此,烤烟生产中土壤有效硼丰缺值在0.56~0.75 mg/kg之间。
Pot experiments were conducted to study the effects of boron fertilizer on the absorption and accumulation of boron in different parts of flue-cured tobacco with six boron fertilizers. The results showed that: 1 During the growth of flue-cured tobacco leaves, the accumulation of boron, nitrogen and potassium in the leaves showed the stage of flowering> topping period. The content of boron and potassium in the leaf of the tobacco leaves showed the lower leaves> the middle Leaf> upper leaf> stem, while nitrogen content showed upper leaf> middle leaf> lower leaf> stem; (2) At the certain value of soil available boron (0.56-0.75 mg / kg) The content of boron in soil increased, but above 0.75 mg / kg, the accumulation of boron, potassium and nitrogen in tobacco was inhibited. Therefore, the effective boron abundance value of soil in flue-cured tobacco production ranged from 0.56 mg / kg to 0.75 mg / kg.