Abstract:

To clarify the effect on maintenance of fertilizer, humidity and temperature of the different cultivation techniques, the effect of five treatments of film mulch, straw mulch, film and straw mulch, straw mulch after film and water retention agent were researched. The results showed that film and straw mulch, film mulch could improve tobacco growth environmental conditions, and there were significant effect of maintenance of fertilizer, humidity and temperature. These two treatments effectively reduced drought stress in the early growth stage of tobacco, and promoted tobacco rapid growth. The role on drought resistance of the treatment of straw mulch and application of water retention agent was weakening with the drought time extension.