Analysis on Multiple Cropping Pattern in Water Network Flue-cured Tobacco Areas of the South of China Based on Concept of Agricultural Sustainable Development

The characteristics of common multiple cropping pattern were introduced,based on the concept of agricultural sustainable development,they were synthetically analyzed from the view of land use and maintenance,crop growing safety,labour force investment,purchasing system and annual comprehensive comparative effectiveness.After analyzing,it was found that the multiple cropping pattern that planting green manure and flue-cured tobacco and late rice successively in the same year was best for the sustainable development of agriculture in such areas.And then the contents of required consummated of this pattern were also put forward.