覆膜时间对临沧水稻土供氮状况和烟株氮积累的影响  

Effects of Plastic Film Mulching Time on Nitrogen Supply of Lincang Paddy Soil and Nitrogen Accumulation in Tobacco Plants

作　　者：黄刘亚 谢新乔 杨子菊 何元胜[3] 亚平[3] 郑元仙[3] 何君[3] 廖小琳[1] 年夫照[1] 

机构地区：[1]云南农业大学烟草学院,云南昆明650201 [2]红塔集团烟草有限责任公司,云南玉溪653100 [3]云南省烟草公司临沧市公司,云南临沧677000

出　　处：《江西农业学报》2016年第12期46-51,共6页Acta Agriculturae Jiangxi

基　　金：云南省烟草公司“临沧绿色生态优质烟叶在红塔高端品牌中的应用研究”(kx141400)

摘　　要：探究了覆膜时间对临沧水稻土氮供应和烟株氮积累的影响。结果表明，烤烟的大田生育期均为127d，成熟期叶绿素含量较高，移栽后35—45d揭膜各项农艺性状指标较好。处理M3在整个生育期中氮供应表现出先减少一增加一减少一增加的趋势，其他4个处理均表现出先减少再增加的趋势。烟碱在烟株各器官中的积累表现为：叶〉根〉茎，且烟碱在根茎中的积累，T1-T2时期属于缓慢积累期，T1-T2时期则为快速积累期。总氮在烟株各器官中的积累表现为：叶〉茎〉根。The effects of plastic film mulching time on the nitrogen supply of Lincang paddy soil and the nitrogen accumula- tion in tobacc0 plants were explored. The results indicated that the field growth duration of flue-cured tobacco was 127 d, the chlorophyll content at mature stage was higher, and the various agronomic characters of tobacco plants during 35 ~ 45 d after trans- planting were better. In the whole growth period of tobacco, the nitrogen supply of Lincang paddy soil showed the trend of decrease - increase - decrease - increase in treatment Ms , and showed the trend of decrease first and then increase in other 4 treatments. The accumulation of nicotine in various organs of tobacco plants revealed the following sequence： leaf 〉 mot 〉 stem, and the ac- cumulation of nicotine in roots and stems was slow at T1 ~ T2 stage and fast at T2 ~ T4 stage. The accumulation of total nitrogen in tobacco olants was arranged as follows： leaf 〉 stem 〉 root.

关 键 词：覆膜时间 氮供应 氮积累 水稻土 烤烟 

分 类 号：S158.2[农业科学—土壤学]