Abstract:

Abstract: Effects of different nitrogen forms on growth 、yield and quality of flue-cured tobacco at red soil、 purple soil、 yellow soil and paddy soil in Yunan were researched. The result showed that: In the red soil、purple soil and yellow soil， NO3—N accounted for 40-60% is conducive to the improvement of the quality of flue-cured tobacco;In the paddy soil ，NO3—N ccounted for 40% is conducive to the improvement of the quality of flue-cured tobacco.