The main reason that caused the smog problem in the heart of Chiang Rai as a result of farmers burning carcasses yield is greater than to plow because of how fast the land preparation and planting to themselves.
The main reasons that cause haze in Chiang Rai is a result of farmers burning crop residues remains than to plow the land, because it is a quick and sure enough the next crop.
The main reasons causing the problem of smog in Chiang Rai was a result of farmers burn the carcass yield smokers than to plough for a quick way to prepare for the next crop and land itself.