Study on Drought Resistance Technology of High Yield Ditch for Pattern Cultivation of Flue-cured Tobacco

High yield ditch applied to flue-cured tobacco production can largely hold up rainwater, change useless rainwater into useful water, and effectively solve problem of volume and distribution of precipitation, which can provide great local environment for tobacco growth, so that stable and high yield can be achieved, and tobacco leaf quality can be improved. Soil moisture with the ditch was 25% to 35% higher than with arch ridge, and the yield with the ditch was 1 425 kg/hm2 higher than with arch ridge, and kg/hm2 480 higher than with gutter ridge. The ditch can hold soil water，increase yield，improve leaf quality, and was the best among the three treatments.