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为了确定贫氯地区氯肥的适宜施用量,对烟田进行施用氯肥的试验。其中,纯氯用量分别为0.0、22.5、45.0、67.5kg/hm2和90.0 kg/hm2。结果表明:在本试验范围内,施氯并不会明显影响烟株生育期;以施纯氯67.5 kg/hm2处理的烟叶含氯量最接近0.300%~0.800%的合理范围,且烟叶产量增幅最大,外观质量最好,油份足。同时,随着施氯量的增加,烟叶还原糖含量提高,烟碱和蛋白质含量降低,化学成分趋于协调,氯/钾比更合理。从经济、安全角度考虑,烟田施氯量以45.0~67.5 kg/hm2为宜。
In order to determine the suitable application rate of chlorine fertilizer in the area of poor chlorine, the tobacco field was tested for the application of chlorine fertilizer. Among them, the amount of pure chlorine were 0.0, 22.5, 45.0, 67.5 kg / hm2 and 90.0 kg / hm2 respectively. The results showed that within the scope of this experiment, application of chlorine did not significantly affect the growth period of tobacco plants. The chlorine content of tobacco treated with pure chloride 67.5 kg / hm2 was the closest to the reasonable range of 0.300% -0.800% The largest, best quality appearance, enough oil. At the same time, with the increase of chlorine application, the content of reducing sugar in tobacco increased, the content of nicotine and protein decreased, the chemical components tended to be coordinated, and the ratio of chlorine to potassium was more reasonable. From an economical and safety point of view, the amount of chlorine applied in tobacco fields should be 45.0-67.5 kg / hm2.