Studies on Irrigation Regime in High Quality Flue-cured Tobacco Production

Through the field test,some essential parameters on high quality flue-cured tobacco production irrigation technology were studied.The results showed that the leaf temperature difference was closely related with the soil relative moisture content,which could be used as the lack target of the flue-cured tobacco moisture content to instruct the irrigation.The change of leaf temperature difference was correspond to the leaf blade wilting situation,and this was helpful to estimate the leaf temperature difference to instruct irrigation.Irrigating should be done once respectively in earlier and middle period of vigorous growing stage and ripe earlier stage.The pouring water amount in vigorous growing stage was 4kg/plant each time,and 2kg/plant in mature period.