论文标题:氨基酸液肥施用时期和用量对烤烟生长和品质影响的研究
Studies on the Effect of Application Date and Amount of Amino Acid Fluid Fertilizer on Growth and Quality of Flue-cured Tobacco
论文作者
论文导师 颜合洪,论文学位 硕士,论文专业 作物栽培学与耕作学
论文单位 湖南农业大学,点击次数 72,论文页数 49页File Size2585K
2007-05-01论文网 http://www.lw23.com/lunwen_139419007/
flue-cured tobacco;; amino acid fluid fertilizer;; application date/application amount;; agronomical characters;; physiological characters
于2006年3月～7月在浏阳市普济镇烟草站，以G80为供试品种，进行了氨基酸液肥施用时期试验和用量试验。研究了氨基酸液肥三个施用时期和三个用量对G80烟株农艺性状、某些生理特性、烘烤后烟叶的品质、经济性状和抗病性的影响。研究结果归纳如下： 1．在旺长期初期和每667m~2叶面喷施75g氨基酸叶面液肥的处理，烟株的茎围，株高，叶数和最大叶叶面积，各部位叶叶面积均优于其它处理和对照；在团棵期初期、打顶后5d施用和每667m~2用量为50g、100g的处理烟株农艺性状也比对照要优。 2．不同施用时期的叶绿素SPAD值以旺长期初期的处理最高，不同用量以每667m~2施用75g最高，其他处理也高于对照；旺长期初期和施用75g·667m~2氨基酸叶面液肥处理的烟株净光合速率、气孔导度、胞间CO_2浓度和蒸腾速率均高于其它处理和对照，其它处理的以上指标也高于对照。 3．不同施用时期和不同用量的处理均比对照提高了单叶重、烟叶产量、产值、均价和上中等比例，其中以旺长期初期施用和每667m~2施用75g氨基酸叶面液肥的处理效果最佳，与对照相比，产量差异达到显著水平，产值差异达到极显著水平。 4．不同施用时期和不同用量的处理提高了上、中部烟叶内总糖和还原糖含量，降低了总氮和蛋白质含量，从而协调了糖碱比，氮碱比提高了烟叶外观品质，其中以在旺长期初期施用和每667m~2施用75g氨基酸叶面液肥的处理明显优于其它处理和对照。 5．不同施用时期和不同用量的处理比对照明显降低了烟株生长期间花叶病、气斑病和黑胫病的发病率和发病指数，其中以旺长期初期施用和每667m~2施用75g氨基酸叶面液肥的处理烟株发病率，病情指数最低。
During March to July in 2006y, G80 was selected as treatment variety,trial of application date of amino acid fluid fertilizer and amount ofamino acid fluid fertilizer was conducted in tobacco station in Puji Town,Liuyang City. Agronomical characters、physiological characters of tobacco,quality、economical characters and disease resistance of flue curedtobacco were studied. The study results are summarized as follows. 1. Girth, plant height, leaf number and maximum leaf area and leaf areaof each part of tobacco plant in early fast growing stage and leaf sprayingamount of 75g amino acid fertilizer per 667m~2 treatment were higher thanthat in other treatments and control. Agronomical characters of tobaccowere better than control in early rosette stage、5d after picking top andamount of 50g、100g per 667m~2 treatment. 2. Chlorophyll SPAD value in early fast growing stage treatment washighest in"different application date treatments and that in amount of75g per 667m~2 treatment was highest in different amount treatments whilethat in other treatment was higher than control respectively. Tobaccophotosynthetic factors including Pn, Cs, Ci, Tr in fast growing stagetreatment and amount of 75g per 667m~2 treatment were higher than that inother treatments and control while that in other treatment was higher thancontrol respectively. 3. Different date treatment and different amount treatment bothincreased weight of single leaf、yield、output value、average price andrate of the middle and superior tobacco leaves. Effects in early fastgrowing stage treatment and amount of 75g amino acid fluid fertilizer per667m~2 treatment were best. The difference between early fast growing stagetreatment and control was up to 5% level in yield and that was up to 1%level in output value. 4. Different date treatment and different amount treatment increased the total sugar and reducing sugar of upper and middle leaf, decreasedcontent of total nitrogen and protein, coordinated ratio of sugar tonicotine and ratio of nitrogen to nicotine and improved feature qualityof tobacco. Effects of early fast growing stage treatment and amount of75g per 667m~2 treatment were obviously better than other treatments andcontrol. 5. Compared with control different date treatment and differentamount treatment obviously decreased disease percent and factor whichwere lowest in early fast growing stage treatment and amount of 75g per667m~2 treatment.
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