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Study On The Relation Of The Growth Base And Shade Intensity And The Growth And Development Of Bryum Community

Posted on:2006-10-16Degree:MasterType:Thesis
Country:ChinaCandidate:J F SunFull Text:PDF
GTID:2133360155970505Subject:Garden Plants and Ornamental Horticulture
Abstract/Summary:PDF Full Text Request
Many perennial mosses are highly valuable in ornamental area, but their sporophytes are difficult to preserve or breed artificially. The natural reproduction speed of gametophyte is so limited that when there are other seasonal mosses or the competitions of the weeds, it is difficult to get natural nice mosses in highly pure degree. These Influences have limited the Bryophytes resources be popularized and applied in view of revegetation, as well as ornamental.In order to improve the gametophyte reproduction speed of Bryum community, promoting its community under manual intervention to expand , the study is done under different culture hosts and different intensity of sheltering, as well as the community expands and the difference between the situation and ornamental value. The test sets up two equations, and the cultivated basis (JZ ) have 3 levels: Soil of vegetable garden , clay , river sand; Sheltering (ZY ) has 4 levels: 0% , shading 35% , shading 50% , shading 70%. The results of the examinations are listed as following:1. There is certain function from the Bryum community of reducing on environmental pH on the basis of vegetable garden soil after 180 days cultivated. When 35% ≤ ZY≤ 70%, pH will drop significantly when the reduction of the luminosity; Shading of 35% ≤ ZY≤ 70% can increase the consumption of N significantly; and the treatment of of 50%≤ ZY≤ 70% can increase the consumption to P significantly; the treatment of of 50%≤ ZY≤ 70% can also increase the consumption to K significantly, but when ZY =70% and ZY =50% are compared to each other, consumption of K has not shown the difference; the treatment of 35% ≤ZY≤70% can significantly increase the consumption of organic matter.2. The survival rate of gametophyte on vegetable garden soil and river sand is higher significantly than the clay, but the survival rate difference between the vegetable garden soil and the river sand is not significant; 35% ≤ZY≤70%shading can significantly improve final survival rate of gametophyte, and when compared with 35% of shading, the difference of gametophyte survival rate does not significant when the shading is 50%; The river sand cankeep survival rate of more than 80% for longer time when compared to the soil of vegetable garden, and this character can make the river sand good protective carrier in initial stage (0-40 days ) as the gametophyte ; Vegetable garden soil can keep function that gametophyte survive relatively steady, and the treatment of ZY>50% can slow down the speed of gametophyte death rate drops significant than the treatment of ZY=35%.3. The covering of the mosses community on the vegetable garden soil is extremely significantly higher than river sand and clay host, it is not significant to overlay one degree of differences between the river and sand and clay; When comparing ZY =35% to the whole illumination, 50% < 70% of ZY<35% shady to the shading of 35%, the increasing of the mosses community covering is significant; With keeping overlaying one degree of ability highest of clay under the whole illumination condition, ZY =50% hide shady vegetable garden soil of treatment cover degree increase most steady , serious degree hide getting shady river sand under is it overlay similar to ability of clay.4. The mosses clump on the vegetable garden soil is the best(5.3) when ornamental value is evaluated, the view and admire value of moss clump on the river sand get the lowest grade (1.3), the deal of shading exerts a great influence on score of the vegetable garden soil; and the treatment of 35%
Keywords/Search Tags:Bryophyte, Growth basis, Cultivate, Shade, ornamental quality, Bryum
PDF Full Text Request
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