【作者】 刘建阳；

【导师】 周清明； 徐茜；

【作者基本信息】 湖南农业大学 ， 作物学， 2009， 硕士

【摘要】 在对南平烟区土壤样品和烟叶样品普查数据进行统计分析的基础上,在南平市王台镇进行了田间不同氯化钾施用量对烤烟产质量的影响试验研究,结果表明:1.南平烟区土壤水溶性氯含量偏低,平均为20.43mg/kg,由于受土壤氯含量低、降雨量大和长期未施用氯肥影响,导致烟叶含氯量很低,平均为0.17%,影响了烟叶质量的提高。土壤水溶性氯含量与烟叶含氯量没有明显的规律性。2.氯化钾施用量与烟叶含氯量呈显著的直线正相关（y=0.059x+0.3537,r=0.9927＞r_α）。在0～90 kg/hm²范围内,适量施氯对烤烟生育期和农艺性状没有明显的影响,可以提高烟叶上等烟比例和单叶重,可以提高烟叶产量和产值。3.在施氯量0～90 kg/hm²范围内,适量施氯可以提高烟叶外观质量,增进烟叶香气量,改善烟叶评吸质量。可以提高烟叶含氯量,调节钾氯比,改善烟叶内在品质。4.南平烟区植烟土壤在生产上建议采用氯化钾部分代替硫酸钾,从安全施氯考虑,在氯含量较低的土壤上,施氯量以氯化钾45 kg/hm²左右,或氯化钾施用量占总施钾量的15～30%（以K₂O计）为宜,此时烟叶增产,产值提高,上等烟比例提高,烟叶品质得到改善。更多还原

【Abstract】 Based on investigating the soil samples and the tobacco samples with statistical method in Nanping area, experiments are carried out to study the effect of the quality of tobacco affected by the different quantity of potassium chloride fertilized in Wangtai town of Nanping city. The results showed that:1. There is an average content of water-soluble chlorine that is 20.43mg/kg lowered than normal content in the soil in Nanping city. Additionally, there are abundant rainfall and unfertilized with chlorine fertilizer for long time so that there is lower chlorine content in tobacco, average chlorine content is 0.17%.and it limited the improvement of tobacco quality. But there is no obvious regularity between water-soluble chlorine and the chlorine content in tobacco.2.There is a positive linear correlation between the quantity of fertilizing potassium chloride and the chlorine content in tobacco with y=0.059x+0.3537, r=0.9927>r_α. Within the limit of 0 to 90 kg/hm² of chlorine fertilizer, there is no obvious effect to growth period and economical character but to the yield and production value of tobacco.3. Within the limit of 0 to 90 kg/hm² of chlorine fertilizer, fertilizing chlorine improved the appearance quality of tobacco, increased the quantity of perfume of tobacco, improved the tobacco grade. Adjusting ratio of potassium and chlorine by improving the chlorine content of tobacco, the inherent character of tobacco may be improved at the same time.4. The propose is that the fertilizer of potassium sulfate should be substituted by potassium chlorine for the safe of fertilizing chlorine. In the soil with lower chlorine content, the quantity of potassium chlorine fertilizer should be limited in the range of 45 kg/hm² ,or in the range from 15% to 30%（subject to K₂O occupied total quantity） so that the tobacco yield can be improved, the tobacco production value can be enhanced, the high grade ratio of tobacco can be augmented and the tobacco character can be increased.更多还原