【摘要】 为合理施用氯肥,确保烟叶氯含量在优质烟叶氯含量范围内,研究了氯用量(不施氯、施氯45、75 kg/hm~2)和施用期(氯全部作基肥、基肥施氯50%加追肥施氯50%)对土壤氯含量、烟叶氯含量、烟叶产量和产值的影响。结果表明:基肥结合追肥施氯较基肥施氯能更有效地提高烟株根际土壤氯含量和烟叶氯含量;施氯45kg/hm~2(基肥施氯50%、追肥施氯50%)的烟叶氯含量为0.54%～0.59%,钾氯比为7.44～7.88,均在优质烟叶氯含量(0.3%～0.8%)和钾氯比(4～10)的适宜范围内,其烟叶产量较对照增加70.5 kg/hm~2,产值提高3 354.0元/hm~2。更多还原

【Abstract】 In order to apply chlorine fertilizer reasonably and ensure the chlorine content of tobacco leaves within the range for high quality tobacco leaves, the effects of the amount of chlorine(no chlorine, chlorine application 45 kg/hm~2,chlorine application 75 kg/hm~2) and application period(chlorine all used as base fertilizer, chlorine used as base fertilizer50% and topdressing fertilizer 50%) on soil chlorine content, tobacco leaf chlorine content, tobacco yield and output value were investigated. The results showed that chlorine content in rhizosphere soil and tobacco leaf increased more effectively by applying chlorine base fertilizer combined with topdressing fertilizer. Under chlorine application at 45 kg/hm~2(50% chlorine application for base fertilizer and 50% chlorine application for topdressing fertilizer), the chlorine contents in tobacco leaves were ranged from 0.54%-0.59%, and the ratios of potassium to chlorine were ranged from7.44-7.88, meeting the range for high quality tobacco leaves, which are 0.3%-0.8% for chlorine and 4-10 for potassium-chloride ratio. Compared with the control, the yield of tobacco leaves increased by 70.5 kg/hm, and the output value increased by 3 354.0 Yuan/hm~2.更多还原