不同绿肥翻压对陕南烤烟土壤和烟叶钾营养、农艺性状及经济性状的影响

Effect of Different Green Manure Application on Potassium Contents,Agronomic and Economic Characters of Flue-cured Tobacco

采用田间试验方法,以秦烟96为试验材料,研究了黑麦草和毛苕2种绿肥翻压后对烟田土壤容重、土壤和叶片中钾营养以及烤烟的农艺性状和经济性状的影响,旨在寻求通过绿肥翻压,改善钾营养,进一步提高烟叶品质。结果表明,与对照相比,2种绿肥翻压均能显著降低烟田土壤的容重,增加土壤速效钾含量,提高田间鲜叶和烤后烟叶钾含量,提高烤烟上等烟比例和产量及质量,综合分析以毛苕翻压优于黑麦草翻压。因此,毛苕可作为一种优良的绿肥在陕南烟区示范推广,为改良烟田土壤、培肥地力、提升烟叶品质提供理论依据和技术支撑。

A field experiment was conducted to study the effect of two different green manure application of Secale ce- real L. and Vicia uillosa Roth on soil bulk density, potassium contents, agronomic and economic characters of flue- cured tobacco to improve soil fertility and potassium contents as well as provide scientific basis for production with high yield and quality in Hanzhong tobacco region using Qinyan 96. The results suggested that two different green manure both can obviously decrease soil bulk density, improve the soil available potassium content, and increase po- tassium content of tobacco leaves as well as the quality and agronomic traits compared to the control. Conclusively, Vicia uiUosa Roth could be the reasonable application of green manure to improve soil fertility and promote the growth and development of flue-cured tobacco. Therefore, Vicia can be used as experimental extension in an attempt to provide theoretical basis and technical support for improving soil fertility and enhancing the quality of tobacco in practice of Qinyan96 in the southern tobacco-growing area in Shannxi.