Effects of Drought Stress on Growth of Industrial Hemp at Different Growth Stages
In order to study the response of industrial hemp at different growth stages to drought,two different types of industrial hemp varieties(Jinma 1 and Fenma 3)were used as test materials.The drought stress was conducted by water controlling of potted cultivation,and the effects on industrial hemp at multiple growth stages(seedlings,rapid growth stage,blooming and mature stage)were studied.The results showed that drought stress significantly affect the growth of the two types of hemp,especially for plant height,stem diameter,leaf area,dry weight of stem and leaf,root volume,root surface area,root average diameter,root dry weight.These indexes are significantly lower than those of control group.How-ever,the root-shoot ratio are significantly higher than those of control group.The greatest impact of drought stress on both types of industrial hemp was observed in the rapid growth stage,followed by the seedling stage.
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