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时间:2020-05-19
《施肥对湿地松中龄林生长及土壤的影响.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、巾国在琴c亟报2015,31(16):6—13ChineseAgriculturalScienceBulletin施肥对湿地松中龄林生长及土壤的影响肖兴翠,李志辉,张志兰,康伟静,吴际友(’中南林业科技大学,长沙410004;泰格林纸集团股份有限公司,湖南岳阳414002;云南林业职业技术学院,昆明650024;湖南省林业科学院,长沙410004)摘要:为了促进湿地松中龄林的生长,以湘北9年生湿地松为研究对象,研究了配方肥不同施肥量对湿地松生长、土壤的影响及成本效益。施肥后3年的结果表明:不同施肥处理的胸径、树高、单株材积、林分蓄积生
2、长量及施肥效益均不同程度高于对照,以700g/株对湿地松生长的促进作用最大;施肥后2年的土壤养分比施肥前有所改善,不同土层土壤pH值降低,有机质、速效K含量均有所提高,速效N含量大幅提高,上层增加量高于下层,速效P不同程度减小,上层减少量低于下层;适量施肥可促进豆马勃菌的生长,施肥后7个月,豆马勃子实体个数在100~800g/株范围内总体随施肥量的增加而增加。对湿地松中龄林进行1次追肥,能提高单位面积产量和效益,以N、P、K配方肥700g/株最佳。关键词:施肥;湿地松;中龄林;生长;土壤中图分类号:$725.5,$791.246文献标
3、志码:A论文编号:casbl4120021EffectsofFertilizationontheGrowthandSoilofMiddle。。agedSlashPineForestXiaoXingcui,LiZhihui,ZhangZhilan,KangWeijing,WuJiyou(CentralSouthUniversityofForestryandTechnology,Changsha410004;TigerForest&PaperGroupCo.,Ltd.,YueyangHunan414002;YunnanForestryTe
4、chnologicalCollege,Kunming650024;4HunanAcademyofForestry,Changsha410004)Abstract:Inordertopromotethegrowthofmid—agedPinuselliottiiforest,theinfluenceofdifferentfertilizinglevelsofformulafertilizerwasstudiedonthegrowth,thesoilandcost—benefitof9year—oldPinuselliottiiplant
5、ationsinthenorthernpartofHunan,China.Theresultsshowedthat,3yearsafterfertilization,theincrementofDBH,height,individualvolumeandthestandvolume,andthefertilizerbenefitofdifferentfertilizationtreatmentswerehigherthanthatofthecontrastindifferentdegrees,700g/treehadthebigges
6、troleforthegrowthofPinuselliottii.2yearsafterfertilization,thesoilnutrientwasimprovedthanbefore,thesoilpHvalueofdifferentlayersdecreased,organicmatterandavailableKcontentincreased.AvailableNcontentincreaseddramatically,andtheincreaseintheupperlayerwashigherthanthatinthe
7、lowerone.AvailablePdecreasedindifferentdegrees,andreductionintheupperlayerwaslowerthanthatinthelowerone.TheproperapplicationoffertilizercouldpromotethegrowthofPisolithustinctorius,and7monthsafterfertilization,thenumberofPisolithusfruitingbodygenerallyincreasedwiththeinc
8、reaseofthefertilizerin100—800g/tree.Fertilizationonceinmiddle—agedslashpineplantationscouldincreasetheyieldand
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