黔北烤烟双行凹垄全生育期地膜覆盖适宜施氮量研究  

Optimal Nitrogen Level of Flue-cured Tobacco under the Condition of Double-row Concave Ridge with Plastic Mulching during the Whole Growth Period in the North Guizhou

作　　者：彭成林[1] 梁永江 袁家富[1] 罗明清 崔政 毕庆文[3] 陈华为 徐祥玉[1] 

机构地区：[1]湖北省农业科学院植保土肥研究所,武汉430064 [2]贵州省烟草公司遵义市公司,贵州遵义563000 [3]湖北中烟工业有限责任公司,武汉430051

出　　处：《湖北农业科学》2010年第10期2401-2403,共3页Hubei Agricultural Sciences

基　　金：贵州省烟草公司科技攻关项目(黔烟科200503);湖北中烟工业有限责任公司资助项目

摘　　要：通过大田小区试验,研究了在双行凹垄全生育期地膜覆盖条件下,肥料N、P2O5、K2O保持1.00∶1.22∶2.73不变时,黔北中等肥力旱地土壤栽培烤烟适宜的施氮量。结果表明,在82.5～105.0kg/hm2的施氮量范围内,增加施氮量能促进烤烟早发,随生育期的推进,不同处理烤烟农艺性状的差异有所缩小。随施氮量的增加,烤烟单位面积产量增加,上等烟率上升,烟叶的单位面积产值和均价均与施氮量表现为二次函数关系。综合而言,黔北中等肥力旱地土壤采用双行凹垄全生育期地膜覆盖栽培烤烟最适宜的施氮量为90kg/hm2。The effects of different nitrogen level on the growth of flue-cured tobacco was studied using field plot experiment under the condition of double-row concave ridge with plastic mulching during the whole growth period in north Guizhou when the N∶P2O5∶K2O of fertilizer was 1.00∶1.22∶2.73. The results showed that the tobacco＇s growth was improved with the increase of nitrogen level, but these difference decreased in later stage. With the increasing of nitrogen level, the leaf yield and the superior leaf proportion increased, but the regularity for change of the output value and average price was quadratic function. In a word, the suitable nitrogen level was 90 kg / hm2 under the condition of double-row concave ridge with plastic mulching during the whole growth period in the north Guizhou.

关 键 词：烤烟 双行凹垄 地膜覆盖 施氮量 

分 类 号：S572.062[农业科学—烟草工业]