粤北烟区覆盖栽培措施对烟草生长的影响

为了完善烟草(Nicotiana tabacumL.)地膜覆盖配套技术,采用田间试验方法在广东省南雄市研究了不同覆盖栽培措施对烟叶生长的影响。结果表明,揭膜高培土、前膜后草处理比地膜覆盖不揭膜处理均能显著提高烟株生育后期的根系活力和显著降低中部叶、上部叶的丙二醛含量,显著增加烟叶产量与产值,并且揭膜高培土、前膜后草处理比地膜覆盖不揭膜处理均有提高上部叶、中部叶的总糖、还原糖、总烟碱、总氮、氯、钾含量的作用,烟叶化学成分更加协调。

Effect of Mulching Cultivation on Tobacco Growth in Tobacco Growing Area of North Guangdong

In order to optimum the tobacco (Nicotiana tabacum L.) mulching cultivation technics, the effect of different mulching cultivation measures on the growth of tobacco leaf was studied in Nanxiong, Guangdong by using field test method. The results showed that compared to film mulching cultivation without uncovering membrane, the treatment of high earth up, first membrane and then grass treated with film mulching could significantly improve the root vigor of tobacco plant in the later stage; while the content of malondialdehyde in the upper leaves was significantly increased, thus the yield and output value of tobacco leaf was increased. And for the high earth up and anterior membrane treatment, the trend of total sugar, reducing sugar, total nicotine, total nitrogen, chlorine and potassium in the upper lobe and middle leaf was improved com-pared to film mulching cultivation without uncovering membrane, and the chemical constituents of tobacco leaf were more co-ordinated.