Origined from South America, planted in temperate zone and tropicalbelt in the world.
属茄科烟草属，原产南美洲，现广植于全世界温带和热带地区。
2
The output, which is given by the model, reflects the transition and the differences in nature between the south subtropical and tropicalbelt .
由于划分背景的不同和自然带界线客观存在的过渡性缘故，使得我国热带北界的划分存在多种意见分歧。
3
For cartographers, the tropicalbelt is defined quite simply by the tropics of Cancer and Capricorn, at latitudes 23.5 degrees north and south of the equator.