首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 109 毫秒
1.
福建中亚热带村级农业生态经济类型的成因与发展机制研究林文雄,吴志强,林群慧,郑世庆,王松良,梁义元(福建农学院,福州350002)ContributingFactorandDevelopmentMecbanismofRuralAgro-ecolomicTypesinMid-subtropicalRegionofFuJianProvince¥.LinWenxiong;WuZhiqiang;LinQunhui;ZhengShiqing;WangSongliang;LiangYiyuan(FujianAgriculturalCollege,Fuzhou350002).ChineseJournalofEcology,1993,12(2):66-68.Usingsystematicanalysismethodtheauthorsstudiedthestatuecharacteristicsandtheirvariationpat-ternsofruralagro-ecolomictypeinmid-subtropicalregionofFujianprovince.11tapesofsystemstructurean  相似文献   

2.
里骆林区常绿阔叶林和人工杉木林气候水文效应   总被引:11,自引:2,他引:11  
里骆林区常绿阔叶林和人工杉木林气候水文效应黄承标,文受春(广西农学院林学分院南宁530001)(广西龙胜县林业局541700)ClimaticandHydrologicalEffectsofEvergreenBroad-leavedandArtificialChineseFirForestsinLiluoForestedRegion¥HuangChengbiao(ForestryCollege,CuangxiAgriculturalUniversity,Nanning530001),WenShouchun(ForestryBureau,LongshengCounty,Guangxi541700);ChineseJournalofEcol-ogy,1993,12(3):1-7.Siteinvestigationsandresearchesin1980-1990showthatevergreenbroad-leavedandartificialChinesefirfOrestsinLiluoforestedregioncanreducethevariationrangeofatmosphericandsoilt  相似文献   

3.
祁连山植被水文效应的多层次Fuzzy综合评判   总被引:8,自引:0,他引:8  
祁连山植被水文效应的多层次Fuzzy综合评判车克钧,傅辉恩(甘肃省张掖祁连山水源林研究所734000)Multiple-LevelFuzzyComprehensiveEvaluationonHydrologicalFunctionsofVegetationsontheQilianMountains¥.CheKejun;FuHuien(QilianMountainsInstituteofForestforWaterSourceConservation,Zhangye,GansuProvince734000).ChineseJournalofEcology,1993,12(3):31-35.BymeansofmuItiple-levelfuzzycomprehensiveevaluation,thehydrologicalfunctionsoffourvegetationtypesareanalyzed.PiceacrassifoliaforestisshowntobethebesttypeforwaterconservationonQilianmountains,Sabinaprzewlskiiforesta  相似文献   

4.
EffectofEpidermalGrowthFactoronFollicularDevelopmentandSteroidogenesisinPerfusedRatOvary¥LUOWen-xiang(罗文祥);ZHAOFang(赵芳);MAKui...  相似文献   

5.
MPFInductionofMicrotubuleAssemblyatInterphaseKinetochoreofCHOCellsFENGMei;(冯梅)ZHANGHuan-xiang;(张焕相)WANGYong-chao;(王永潮)WANGYue...  相似文献   

6.
FactorsAffectingElectro-FusionandElectro-ActivationInSerialNuclearTransplantationInGoat(Carpahircus)EmbryoWANGYu-ge(王玉阁);ZOUX...  相似文献   

7.
杉木火力楠混交林根系的研究   总被引:28,自引:0,他引:28  
杉木火力楠混交林根系的研究李振问,杨玉盛,吴擢溪,赖仕嶂(福建林学院,南平353001)(福建尤溪县林业科学研究所,365200)RootSystemofMixedStandofChineseFirandHomana ¥LiZhenwen;YangYusheng(FujianForestryCollege,Nanping353001),WuZhouxi;LaiShizhang(ForestryResearchInstituteofYouxiCounty,Fu-jianProvince365200).ChineseJournalofEcology,1993,12(1):20-24。Therootsystemofa6-yearmixedstandofChinesefirandHomanaisstudiedby"soilcolumn"and"standardsampletree"methods.Thefineroot(lessthan2mmindiameter)biomassofindividualtreeofChinesefirinmixedstandis14.5%higherthaninpurestand,w  相似文献   

8.
南山暖性次生针叶林的Fuzzy数学分类余小平(重庆师范学院生物系,630047)FuzzyNumericalClassificationofWarmSecondaryConiferousForestatNansanMountain¥.YuXiaoping(DepartmentofBiology,ChongqingTeachers’College,630047);ChineseJournalofEcology,1993,12(4):23-26.NumericalclassificationsaremadeformassonpinecommunitiesinwarmsecondarvconiferousforestatNansanmountain.Fuzzyaggregationanalysisisapplied,andsixasxoclationgroupsandtenassociationsareclassified.Theresultsofclassificationcoincidewithactualconditionsofvegetationresources.Keywords:association  相似文献   

9.
杉、烟混农耕作技术及效益分析方乐金,吴汝章张均明,黄宣正,刘兵(安徽省黄山市林业科学研究所,屯溪245000)(安徽省歙县烟草研究所,245200)TecknologyandBenefitsofFirandTobacoIntercropping¥FangLejin;WuRuzhan(ForestryInstituteofHuangshan,AnhuiProvince245000),ZhangJunming,HuangXuanzheng,LiuBing(TobocoInstituteofXiCounty,AnhuiProvince245200).ChineseJournalofEcology,1993,12(6):25-28.Incensetobacowasintercroppedwith1-2yr.firplantation。Thebenefitswereanalyzed.Theintercrop-pingsystemimprovedspaceandlightenergyutilization,firseedlinggrowth,soil-waterprotectionandtheoccurrenceofd  相似文献   

10.
生态位理论及其在森林生态学研究中的应用   总被引:47,自引:4,他引:43  
生态位理论及其在森林生态学研究中的应用朱春全(中国林业科学研究院林业研究所,北京100091)NichcTheoryanditsApplicationinForestEcology¥.ZhuChunquan(InslituteofForestry,ChineseAcademyofForestrySciences,Beijing100091),ChineseJournalofEcology,1993,12(4):41-46.Thedevelopmentofnichetheoryanditsapplicationinforestecologicalstudyarereviewedinthispaper.Itispointedoutthatthefunctionalactionofplantunitwasnotinvolvedinpreviousnicheconcepts,Theparticularitiesofnicheofplantunitarediscussedandanewmethodisdevelopedtodetermineitwithpho-tosyntheticproductionasafunct  相似文献   

11.
李福春  熊立新 《昆虫知识》2005,42(6):704-707
在岳阳地区农田菜地,寄生于小地老虎幼虫Agrotis ypsilon的线虫都是地老虎六索线虫Hexamermis agrotis。田间调查其寄生率高达44%~68%。并对地老虎六索线虫的生活史及温度、湿度、土壤肥料、日照等自然因素对该线虫生存繁殖的影响进行了调查。  相似文献   

12.
索线虫寄生前期幼虫的分类研究   总被引:2,自引:0,他引:2  
本文对六索属、罗索属和两索属3属6种索线虫的寄生前期幼虫进行了观察比较,对索线虫寄生前期幼虫作为索科线虫属、种鉴别的可能性、分类鉴别方法和主要鉴别特征值等问题作了初步研究。  相似文献   

13.
卢筝 《昆虫学报》1984,(2):160-164
本文研究了小地老虎Agrotis ypsilon Rott.成虫的消化系统和马氏管的形态,详细描述了消化道、唾腺和马氏管三个部分的构造。观察到有两种构造是前人有关文献中未描述过的:1.吸泵被区分为几丁质的底壁和极薄的背壁;2.唾窦背面存在有一对囊形小体,它们伸入到吸泵中。  相似文献   

14.
本文报道了小地考虑蛾迁飞活动与气候因子能源物质的相互关系。1985-1988年在云南白马雪山进行了三个全年的小地考虑蛾迁飞动态的系统观察,并测定比较了不同虫源的脂肪含量。结果表明,白马雪山一年有5次迁飞蛾峰。迁飞蛾种群动态与温度、湿度、降水、风速、气压和高空50000帕的西南及北风气流有密切关系。不同虫源的雌蛾脂肪含量差异显著,迁出型含量最高,本地型次之,迁飞过境型又次于前者,迁入型含量最低。  相似文献   

15.
A new species of mermithid nematode, Hexamermis popilliae n. sp. (Nematoda: Mermithidae) is described from the Japanese beetle Popillia japonica Newman in Italy, an area of new introduction for this invasive pest. The combination of the following characters separates H. popilliae from other members of the genus Hexamermis Steiner, 1924: adult head obtuse; amphidial pouches slightly posterior to lateral head papillae in female but adjacent to lateral head papillae in males; amphidial openings large, well developed; amphidial pouches elliptical in females and oblong in males; cuticular vulvar cone well developed, vulvar lips greatly reduced or lacking, vagina curved at tip where meeting uteri, without reverse bend (not S-shaped), spicules slightly curved, with a slight bend in the basal portion, approximately equal to body width at cloaca. This is the first record of a species of Hexamermis parasitizing the Japanese beetle Popillia japonica. The only previous mention of mermithid nematodes from P. japonica was an undescribed species of Psammomermis in North America. Hexamermis popilliae will be evaluated as a potential biological control agent in an integrated control program of the Japanese beetle in Italy.  相似文献   

16.
Summary A new species of genusPeyronellaea, P. indianensis sp. nov., has been described. Its isolation from the soil is the first record to science. It differs from previously recorded five species parasitizing various host plants. As it is isolated on a filter paper buried in the soil, it is a cellulose decomposing fungus  相似文献   

17.
盘菌一新种     
本文报道江苏省寄生在侧柏(Platycladus orientalis(L.)Franco)上的盘菌新种Chloroscypha platycladu s Dai sp.nov.。对其形态特征给予汉文和拉丁文描述及显微照像。  相似文献   

18.
Hexamermis cathetospiculae n. sp. (Mermithidae: Nematoda), a parasite of the rice stemborer, Tryporyza incertulas (Wlk.), is described. This mermithid was observed to control the stemborer in Malaysia. It is distinguished from other members of the genus by the shape of the vagina, the nearly straight spicules, and the form of the amphids.  相似文献   

19.
本文报道了采自我国新疆阿勒泰山寄生于蔷薇科(Rosaceae)植物地榆(Sanguisorba officinalis L.)上的轴霜霉新种——地榆轴霜霉(Plasmopara Sanguisorbae C.J.Li et al.sp.nov.)。轴霜霉寄生于蔷薇科植物上是首次报道。对该种的形态作了拉丁文和汉文描述,并附有特征图。  相似文献   

20.
本文报道采自江西梅岭,寄生在紫玉兰 Magnolia liliflora Desr.上的白粉菌一新属新种,即球叉丝壳属 Bulbomicrosphaera A.Q.Wang gen.nov.;新种木兰球叉丝壳 Bulbo-microsphaera magnoliae A.Q.Wang sp.nov.  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号