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Impact Of Aircraft Seedling Planting Factor And Raising Seedlings Research On Survival Rate Means In Shaanxi

Posted on:2009-12-13Degree:MasterType:Thesis
Country:ChinaCandidate:C Y JingFull Text:PDF
GTID:2143360272965735Subject:Agricultural extension
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The afforestation of aerial seeding is a kind of manual simulation natural seeding afforestation methods,using airplanes to sprinkle forest tree seeds on designed seeding areas. Aerial afforestation is a time-saving,labor-saving,low investment and high-efficiency way of afforestation,speed up an effective way of forest restoration and forestry development.I want to study this subject and improve the ways and means of survival rate of seedlings aerial so as to cause more people paying attention to this issue.I hope the results of research is useful to the production of links and improve the economic efficiency,ecological and social benefits of aerial afforestation,better aerial afforestation in the forestry construction.The nursery stocks through aircraft seeding have their own growth characteristics.The recognition of these features is the foundation to study the seeding survival rate.Only objectively understanding these characteristics,in accordance with objective laws and achieving the unification of person's behavior and natural law,we can get twice the result with half the effort.The growth characteristics of aerial seedling:young seedlings,not easy to observe,for many years symbiotic,the poor to resistance,there is a strong selective to environment,and early seedling growth slow and so on.From the area of forest in south-central of Shaanxi Province,aerial seedlings have been better to eventually preserve the forest,the study found that these forest areas in addition to good rainfall experienced at the time,temperature factor,etc.There are other laws to follow in the following areas:most of the forest in the slope and half slope,more seedlings grow in the area vegetation cover,a remote mountain area into a better vaccine,good soil conditions is easy to grow seedlings.However,the seeding survival rate in the afforestation of aerial seeding,under the subjective and objective factor's influence,has the reduction tendency.The low survival rate has become a realistic question with the restriction to the sustainable development of the afforestation of aerial seeding.So that how to improve the survival rate has become an urgent solving problem.The impact of aircraft into planting seedlings of factors,both natural and objective reasons,some for subjective reasons,natural factors can not be changed,but may be the effective used.Resulted in lower survival rate of seedlings aerial of the many factors, human factors account for a large proportion,The human completely are by no means helpless in front of the nature,in fact,the human factor on the aerial seedling have a significant impact.We should correctly understand the dialectical relationship between the natural factors and human factors.So changing our certain behaviors maybe improve the survival rate. But enhancing the survival rate is a systems engineering,in which each work link and the natural factor can have the influence on the aerial seedling survive.Therefore,the research methods should be multi-gradation and multi-angle,paying attention to each work,holding each detail.According to the above we can inquire into the effective and feasible methods.Research improving the survival rate of seedlings can promote the sustainable development of forestry,can change the status of the current aerial afforestation in Shaanxi and effectively achieve the purpose of aerial reforestation;main factors affect the survival rate of seedlings aerial as follows,temperature,soil structure,human factors,grazing,forest pests and so on;the main way to improve the survival rate has carefully planning and designing area,do a good job link in the construction,management in the implementation of measures, continuous innovation and so on.Main factors affect the survival rate of seedlings aerial as follows,temperature,soil structure,human factors,grazing,forest pests and so on;the main way to improve the survival rate has carefully planning and designing area,do a good job link in the construction,management in the implementation of measures, continuous innovation and so on.So as to enhance the study of aerial seedling survival rate of seedlings of forestry and provides a theoretical basis for the promotion of sustainable development.
Keywords/Search Tags:Afforestation of aerial seeding, Seedling factor, Survival rate
PDF Full Text Request
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