Abstract
Pot experiment was used to simulate the effect of water-retaining agent on agronomic trait, root growth and yield of flue-cured tobacco under different drought conditions (including drought in root extension period, drought in flourishing growth period, drought in maturation stage, as well as severe, medium and mild drought in the growth duration) in the growth duration of flue-cured tobacco. The results showed that the effect of water-retaining agent on increasing area of flue-cure tobacco leaf was apparent when simulated irrigation amount was 250mm and 100mm, and water-retaining agent could effectively promote growth of flue-cured tobacco root system. While the yield of flue-cured tobacco was the highest when the simulated irrigation amount was 400mm and applied water-retaining agent was 45g/pot.
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