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《Journal of Anhui Agricultural Sciences》 2012-17
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A Study on Characteristics and Growth Laws of Bretschneidara sinensis Hemsi. During Young Seedling Period

MA Dong-xue et al(Garden Department,Hebei Professional College of Political Sciences and Law,Shijiazhuang,Hebei 050061)  
[Objective]Study on characteristics and growth laws of Bretschneidara sinensis Hemsi.during young seedling period.[Method]This paper analyzed the quality characteristic of seedling,growth characteristic in the budding stage,growth rhythm of different seedling stage and effects of shading treatments on growth.[Result]①The water content of Bretschneidara sinensis Hemsi.seed is 52.2%;the weight of 1 000 seeds are 830-138 4 g;exalbuminous seed;hypogaeous seedling.②During seed germination,the radicles begin to grow faster in the third date and the speed of growth are very more faster than hypocotyls,which lead to cotyledons remain under soil.However,length of pinnately compound leaves of annual seedlings is more shorter,so we think that it may be related to the nutrients accumulated in the bodies of trees.③Shading has not effects on growth of seedlings.④The curve of height of annual seedlings is a"S"-shaped one,which shows that time of June and July are the key period to promote growth of seedlings by management of water,fertilizer and soil.[Conclusion] In contrast,seedlings of more than 2 years have high speed of growth in the fourth and fifth year of germination,which shows that it is important to have a great row spacing of Bretschneidara sinensis Hemsi.seedlings.
【Fund】: 江西省自然科学基金项目(20114BAB204006)
【CateGory Index】: S792.99
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