摘要
1991年采用土培盆栽和田间试验.研究了钾亏缺.适量及过量对烤烟生长发育、养分吸收、烟叶产量及品质的影响.试验结果表明.增施钾肥能提高土壤有效钾的供应能力,在一定范围内,烟株含钾量、烟叶产量和产值随钾肥用量的增加而增加,烟株氮、钙、镁含量以及钾肥利用率和经济效益随钾肥用量的提高而下降,不同部位烟叶或不同器官中的氮、钾、钙、镁的含量与分布又因钾肥用量不同而有所差异.试验结果还表明.适量钾肥可以降低烟株蒸腾强度,促进光合作用.
Effects of potassium application on the flue-cured tobacco were studied in fields and pots. The results results indicated that the soil available potassium concentration, the potassium concentration in plant, yields and output value of the tobacco were increased, but the N, Ca, Mg concentration in leaf, the efficiency and profit of potassium fertilizer decreased with the increase rate of potassium. The N, K, Ca, Mg distribution in plant and transpiration or photosynthensis were also affected by the potassium application
出处
《湖南农业大学学报（自然科学版）》
CAS
CSCD
1992年第S2期435-443,共9页
Journal of Hunan Agricultural University(Natural Sciences)
关键词
烟草
烤烟叶
钾肥
产量/品质
tobacco
flue-bobacco
potassium fertilizer
yield/quality
