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Study On Effects Of Different Reed Rhizome Length Transplanting Conditions On Seeding And Growth

Posted on:2013-08-23Degree:MasterType:Thesis
Country:ChinaCandidate:Q YangFull Text:PDF
GTID:2230330395971480Subject:Ecology
Abstract/Summary:PDF Full Text Request
At present, due to the disturbance of human activities, the wetlands ecosystemand the environment of the water sources are subject to varying degrees of damage,even have an effect on human life gradually. Phragmites australis, also known as reed,asparagus, be part of Poaceae and Phragmites, is a high degree of morphologicaldifferentiation of the wetland and Meadow steppe vegetation constructive species, andalso be a widely distributed wetland species around the world. Natural habitats, reedmainly rely on the roots breeding, is a typical colonel plant. Reed can not onlyeffectively restore damaged the ecological environment, but also play the role ofnatural purification of water quality. This experiment to take a randomized block-split-plot design using the method to reduce rhizome length, direct cross buried inoverburden depth and water management conditions at the same time to furtherexplore the entire growing season in different months of transplanting reed rhizomeseeding rate and differences of the newborn seedling growth conditions in order toidentify an efficient, environmentally friendly, fast reed asexual reproduction method.The results showed that:Water management conditions and rhizome length significantly affect theseedling percentage. Water management conditions for the soil to maintain a moiststate of the reed seedling percentage higher than that to maintain the status of thewater layer and in the reed growth in the natural state. The seedling percentage atrhizome length30cm is better than that at15cm. The soil depth of5cm and10cmhave no significant influence on seeding rate. And seedling percentage transplantingat May is significant higher than in other months.Water management conditions and rhizome length of the newborn seedlinggrowth conditions had significant effects. Water management conditions for the soilto keep the reed newborn seedlings in the moist state are better to maintain the statusof the water layer and in the reed growth in the natural state. In state of keeping thewater, reed plant height, pitch number, leaf number, Roots buds number, Tillernumber of bud reached maximum, significantly higher than the other two watercondition; For soil in damp condition, new output number, the ground biomass andunderground biomass reached maximum, higher than the other two water conditions.Rhizome length is30cm when the newborn seedling growth conditions better than15cm. The soil depths have little effect on the newborn seedling growth conditions. And newborn seedling growth conditions transplanting at May is better than other months.According to the results of this experiment, I suggest to use the recommendedlength30cm reed rhizome, cross buried underground early in May to be transplantedafter transplanting, pay attention to water management, keeping soil to be wet state, toget maximum seedling percentage and the best of the newborn seedling growth.
Keywords/Search Tags:Phragmites australis, rhizome length, asexual reproduction, seedlingpercentage, growth index
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