苹果酸灌根对烤烟生理指标和经济性状的影响

摘要

The effects of malic acid on the growth and development, physiological properties, dry matter accumulation of fluecured tobacco were studied in field trials. One liter of 4.5 g/L malic acid solution was applied by the root - pouring method to each tobacco plant on the 20th day after transplanting. The results showed that malic acid application was helpful to the growth, development and dry matter accumulation of flue - cured tobacco, it increased the chlorophyll content in leaves, enhanced the weight of the lower leaves, lowered the weight of the central and upper leaves, reduced the leaf difference among different positions, increased the yield and output value, and enhanced the average price and the proportion of the high -quality tobacco.%采用大田试验研究了苹果酸灌根对烟草生长发育、生理特性和干物质积累产生的影响.在烤烟移栽20 d后用4.5g/L的苹果酸溶液灌根,每株1 L.结果表明,苹果酸处理促进了烟草的生长发育和干物质的积累,增加了叶片叶绿素含量和下部叶的重量,降低了中部叶和上部叶的重量,缩小了叶片部位之间的差异,增加了产量和产值,提高了均价和上等烟比例.