Study on Plant Density and N Application Level of Tobacco RG12

In order to explore the best density and level of nitrogen for new varietie tobacco RG12 cultivation,sutiable seed and production technology with the good method were researched,to provide scientific basis for wide application and promotion.Plant density and fertilizer trials experiment of RG12 was carried out.The result showed that the main effect of density was significant,the best planting density was 13 890 plant per hectare,1.2 m× 0.6 m;which has very significant difference wih 16 665 plant per hectare,1.0 m× 0.6 m and 15 150 plant per hectare,1.1 m× 0.6 m.The main effect of N application level was significant,60 kg N per hectare was the best,which has very significant difference wih 30 kg N per hectare and 45 kg N per hectare.The associate effect between density and fertilizer were very significant.The group of 13 890 plant per hectare,1.2 m× 0.6 m,60 kg N per hectare and 13 890 plant per hectare,1.2 m× 0.6 m,45 kg N per hectare have good effect,no significant difference between them.RG12 is a fertilizer tolerance tobacco varietie,and when planted thinly,increase fertilizer application appropriately can increase income.