摘要
为了探讨不同施氮量对赣南烤烟生长发育及烟叶产质量的影响,明确烟区适宜的施氮量.以烤烟品种云烟87为材料,设置了5个不同梯度(120.0、127.5、135.0、142.5、150.0 kg/hm2)的氮肥施用量试验,采用随机区组设计,研究不同施氮量对赣南烟区烤烟农艺性状、产量、产值、品质的影响.结果表明,在一定施氮范围内,随着施氮量的增加,烤烟的茎围、有效叶数、产量、均价、产值及中上等烟比例增加,当施纯氮量超过142.5 kg/hm2,烟叶产质量降低.在施氮量142.5 kg/hm2时,烟株长势、农艺性状表现优良、产量最高、内在化学成分较协调.
Abstract
In order to explore the effects of different nitrogen application rates on the growth and development of flue-cured tobacco in south of Jiangxi Province,as well as the yield and quality of tobacco leaves,and to clarify the appropriate nitrogen application rate in tobacco area.Flue-cured tobacco variety Yunyan 87 was used as the material, five nitrogen fertilizer application experiments with different gradients ( 120. 0, 127.5,135.0,142.5 and 150.0 kg/hm2) were conducted.A randomized block design was used to study the effects of different nitrogen applica-tion rates on the agronomic traits, yield, output value, and quality of flue-cured tobacco in the southern Jiangxi tobacco region. The results showed that within a certain range of nitrogen application,with the increase of nitrogen application rate, the stem circumference,effective leaf number,yield,average price,output value,and proportion of middle to upper grade tobacco of flue-cured tobacco increased.When the pure ni-trogen application rate exceeded 142. 5 kg/hm2 , the yield and quality of tobacco leaves decreased. At a nitrogen application rate of 142.5 kg/hm2 ,tobacco plants exhibited excellent growth vigor,agronomic traits,highest yield,and relatively coordinated internal chemical com-ponents.
基金项目
江西省烟草公司赣州市公司科技项目(202136070097023)
江西省烟草公司赣州市公司科技项目(202236070191049)
江西省烟草公司赣州市公司科技项目(202236070191051)
江西省烟草公司赣州市公司科技项目(2022360701191053)
维普
万方数据