简介：AseriesofresearchesonthenutritionproblemsinthecultivationofChinesefirseedlingsandplantations,whicharemainlyfocusontheproblemsofseriouslanddegradationinChinesefirplantationsincontradictionwiththerapiddevelopmentoftheplantationsinChina,weresummarized.Twelveyearswastakenandmorethan30piecesofresearchpaperswerepublishedfortheresearches,whichreferstotheproblemsofgrowtheffect,physiologicaleffect,vegetationvariation,biomassaccumulation,n...

简介：BasedonthepreviousstudyoncultivationnutritionofCunninghamialanceolataplantationsoffirstgeneration,thecultivationnutritionofC.lanceolataplantationswithmulti-generationwasstudied.Theresultsshowthattherearesignificantdifferencesinthegrowth,developmentandnutrientassimilationamongC.lanceolataplantationswithdifferentgenerationsandnutritionconditions.ThesedifferencesarecloselyrelatedtothelandfertilitydeclineofC.lanceolataplantations.Thispaperde...