湖南贫氯烟区施氯对烤烟产量和品质的影响

为了研究湖南贫氯烟区氯肥的适宜用量,分别在龙山、慈利和桃源3个烤烟主产县进行田间小区试验,设置3个处理,氯用量分别为0、30. 0、45. 0 kg/hm^2。结果表明,烤烟收获后各试验点施氯处理土壤氯含量均提高至10. 1～30. 0 mg/kg;施氯量为45. 0 kg/hm^2时,慈利和龙山试验点的烟叶产量最高,分别较CK增产19%和1. 7%,桃源试验点则以施氯量30. 0 kg/hm^2的产量最佳,较CK增产4. 4%;各点最佳施氯处理的烟叶氯含量均在0. 3%～0. 8%,钾氯比4～10,其它各项化学成分相对较协调,品质较好。

Effect of Chlorine Application on Yield and Quality of Flue-cured Tobacco in Hunan Province

In order to study the suitable amount of chlorine fertilizer in the chlorine-poor tobacco area of Hunan province,the field experiment was carried out in three main flue-cured tobacco producing counties,Longshan,Cili and Taoyuan,and three chlorine fertilizer levels(0、30.0、45.0 kg/hm^2)were set up.The results showed that the chlorine content of flue-cured tobacco soil treated with chlorine increased to the appropriate level of 10.1~30.0 mg/kg after harvest.When the chlorine application rate was 45.0 kg/hm^2,the yield of Cili and Longshan test was the largest,which was 19% and 1.7% higher than that of CK,respectively,and the yield of 30.0 kg/hm^2 of chlorine application was the best in Taoyuan.The content of chlorine in tobacco leaves was between 0.3% and 0.8%,and the ratio of potassium to chlorine was between 4 and 10,the other chemical components were coordinated and the tobacco quality was better.