四川省烤烟氮钾吸收利用规律研究  

Study on Tobacco Use of N and K Absorption Law in Sichuan Province

作　　者：王明富[1] 成本喜[2] 殷英[3] 余垚颖[1] 吴斌[1] 屈健康[3] 余祥文[3] 王勇[4] 罗定棋 顾会占 

机构地区：[1]四川省农科院植保所,四川成都610066 [2]四川省烟草公司生产经营部,四川成都610066 [3]四川省烟草公司技术中心,四川西昌615000 [4]凉山州烟草公司,四川西昌615000 [5]泸州市烟草公司,四川泸州646000 [6]广元市烟草公司,四川广元628000

出　　处：《西南农业学报》2014年第6期2639-2643,共5页Southwest China Journal of Agricultural Sciences

基　　金：四川省烟草专卖局攻关项目[川烟科(2009)2号]

摘　　要：本文对川西、川南和川北植烟土壤氮钾养分含量和变化水平,烟叶氮钾吸收量和生物增长量进行研究。结果表明,川西和川北植烟土壤氮素供应和吸收良好,川南较差;川西和川南钾素供应和吸收良好,烟叶含钾量高,川北烟叶含钾量较低;烤烟移载后15 d左右土壤氮钾含量偏高,中期偏低,后期不足,烤烟生物量增长与氮钾供应不协调。应减少前期氮钾供应量,加大45～75 d钾素供应,保持75 d后一定量的钾素供应的同时,有效调节和改良植烟根际土壤环境,增强钾素在土壤中的生物有效性,进一步提高烤烟生物量和烟叶含钾量。In this paper,the change level of N and K absorbing and biomass growth of tobacco were studied in the western Sichuan,sourthern Sichuan and northern Sichuan tobacco soil. The results showed that the supply and absorption of N were good in the western and northern Sichuan,southern Sichuan was poor; the supply and absorption of K were good in Western Sichuan and southern Sichuan,the K content of tobacco leaves was lower in northern sichuan; the N,K content were very high at 15 days after transplanting,were lower in mid stage and were short in last stage; the biomass growth of tobacco and N,K supplying were unbalanced. So,firstly,the supplying content of N,K were decreased in early period,were increased at 45- 75 days after transplanting,their content were maintained after 5 days,effective regulation and improvement of environment in rhizosphere soil of planting tobacco,enhanced the bioavailability of K in soil,improve tobacco biomass and K content of tobacco leaf.

关 键 词：生态 烤烟 氮钾 吸收利用规律 

分 类 号：S572[农业科学—烟草工业]