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31 个结果
  • 简介:瑞斯耕作长被认为从在某处在画热带野米饭的年度类型播种发源,热带或在长江盆。然而,当我们认为巨大的困难让原始的人在温暖、潮湿的气候播种任何谷物庄稼时,那个想法包含一个毁灭性地弱的点,在杂草全年繁荣的地方。而不是接受理论,我们不得不看见可食的植物的植物的繁殖是在如此的区域的农业的一种主导的形式的现实。可能性被讨论那个工作的眼泪和米饭,对这个区域唯一的二谷物庄稼,可能经由植物的繁殖被开发了在谷物生产以前在后院花园里为药或植物茶获得材料。这个想法被在适度的区域的米饭在它的生长习惯仍然是长期的并且有移植芋头的如此的后院花园能仍然从中国的云南省被看见到老挝的事实支持。由于在整个为19701980的中国的野米饭的详细调查,野米饭的一套克隆在江西省在浅沼泽地存在,这现在被证实,有严重冬季的一个区域冷。在早夏天,古老的农民可能划分了发芽的芽并且由移植进充满的浅沼泽地散布了他们。繁殖力量的如此的方法更快比的为对人的干扰的反应通过一个更好基因的潜力改进了不太高效的大米在种子繁殖的快固定,因为植物的部分是异构的。显然,大米耕作的如此的一种原始方式确实包括了大米耕作的必要部分,即,托儿所床,在浅沼泽地的充满的地里移植象一样。到由种子的真托儿所的从原始托儿所的转移以后可能允许米饭耕作被延长到北区域。在因此设计的充满的耕作,有一系列唯一的优点,即;在一个一样的阴谋的大米的连续收割,没有土壤侵蚀,土壤富饶的慢衰落,矿物质的可获得性,并且每统一区域导致高产量,它一起在温暖、潮湿的区域达到了高度高效的谷物耕作。在沼泽地的瑞斯耕作也是有利的提起鱼文化,哪个组成了一个营养地平衡的底。到充满的�

  • 标签: 原始农业 无性繁殖 生长习性 水稻种植
  • 简介:AseriesofresearchesonthenutritionproblemsinthecultivationofChinesefirseedlingsandplantations,whicharemainlyfocusontheproblemsofseriouslanddegradationinChinesefirplantationsincontradictionwiththerapiddevelopmentoftheplantationsinChina,weresummarized.Twelveyearswastakenandmorethan30piecesofresearchpaperswerepublishedfortheresearches,whichreferstotheproblemsofgrowtheffect,physiologicaleffect,vegetationvariation,biomassaccumulation,n...

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  • 简介:Withtheanalysisonthecharacteristicsofglobalforestcarbonmarketin2010andbasedonthecurrentstatusofChina’sforestcarbonmarket,thepaperpresentedthepathselectionforforestcarbonmarketcultivationinChina,i.e.strengtheningthepromotionandcooperationofinternationalforestcarbonsequestrationprojectstoforwardglobalforestcarbonmarketdevelopment,developingprimarymarkettransactionstosteadilypromotefinancialmarketdevelopment,promotingtheformationofdomesticforestcarbonmarket,andputtingvoluntaryemissionreductionasthepriorityofcurrentmarketdevelopment.

  • 标签: FOREST CARBON SINK TRADING MARKET development
  • 简介:FieldstudieswereconductedintheJiuwantanForestFarm,HuaduDistrictofGuangzhouCityfromJune2004toMarch2006toevaluatetheeffectsofplantingspacings(0.5m×0.5m,0.5m×1.0mand1.0m×1.0m)anddifferentfertilizers(bio-fermentedmanure,NPKcompoundfertilizerandNPKmixedfertilizer)onthegrowthofDaemonoropsmargaritaegrownunderirrigationandfull-lightconditionsforedibleshootsproduction.Theeffectsofapplicationofdifferentfertilizersonthemeanheight,lengthofstem...

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  • 简介:Ricefieldsareecosystemswithmanytypesofplants,microbes,invertebrates,birdsandanimals.Thericefarmingprotectsthebiodiversityoftheregionandmaintainstheecosystemforthebenefitofenvironment.Somericevarietiesreleasebiocidalallelochemicalswhichmightaffectmajorweeds,microbialandpathogenicdiversityaroundriceplants,evensoilcharacteristics.Alargenumberofcompoundssuchasphenolicacids,fattyacids,indolesandterpeneshavebeenidentifiedinricerootexudatesanddecomposingriceresidues,asputativeallelochemicalswhichcaninteractwithsurroundingenvironment.Sincetheseallelopathicinteractionsmaybepositive,theycanbeusedaseffectivecontributorforsustainableandeco-friendlyagro-productionsystem.Geneticmodificationofcropplantstoimprovetheirallelopathicpropertiesandenhancementofdesirabletraitshasbeensuggested.Developmentofcropswithenhancedallelopathictraitsbygeneticmodificationshouldbedonecautiously,keepinginviewoftheecologicalriskassessment(non-toxicandsafeforhumansandecosystem,cropproductivity,ratioofbenefitandcost,etc.).

  • 标签: rice ALLELOPATHY CROP improvement WEED MANAGEMENT
  • 简介:为质的陆地评估的一个基于酒鬼的自动过程被开发。这个过程在自动化陆地评估系统(淡色啤酒)被创造。目的是设计允许的一个过程快分离从为打算的陆地使用的非合适的SOTER单位潜在地合适,显示限制到陆地使用的不同类型。土地的不同类型不相等地被适合到各种各样的使用,陆地评估是对为陆地使用的一种指定类型的土地的一条道的适用性的评价。在实践,这含有比较(匹配)在指定陆地使用的要求和陆地的性质之间。陆地评估概念和定义在纸被对待。淡色啤酒是允许陆地计算程序造他们他们能为陆地评估根据粮农组织框架与计算地图单位的物理、节俭的适用性的自己的知识库的系统的一个计算机程序。有所谓的决定树的淡色啤酒程序工作,是叶子是结果的层次multiway在钥匙(例如,陆地质量的严厉层次),并且树的内部节点是决定标准(例如,陆地特征价值)。这些树被程序穿越为每个地图单位用实际陆地数据计算评估。SOTAL是为目前,三种陆地利用类型(LUT)在被区分的物理陆地评估在淡色啤酒开发的一个基于酒鬼的质的模型,即,在不同输入和工艺的条件下面的栽培香蕉,咖啡和橡胶。这些LUT被11个landuse要求描绘并且由与相应陆地质量匹配陆地使用要求评估了。纸在为陆地质量评价在SOTAL使用的标准上详细描述并且一个最后的适用性等级怎么根据评估陆地质量被完成。结果响应特定的信息和决定和政策制造者的数据需要作为产品通过产生G1S的地图被设想。

  • 标签: evaluation TROPICAL CROPS HaiSOTER HAINAN ISLAND
  • 简介:在1996,中国运行了一个程序由把intersubspecific杂种优势与理想的植物类型相结合引起超级米饭或超级混合米饭。今天,约80个超级大米变化被释放了,他们中的一些在领域实验显示出1221t/hm2的高谷物收益。为超级米饭变化的高收益的主要原因,与那些相比常规变化,能如下被总结:更多的小穗状花小穗每圆锥花序和更大的水池缩放(每平方米小穗状花小穗数);更大的叶区域索引,绿叶的更长的持续时间,更大的光合的率,更高的住宿抵抗,在出发阶段前的更大的干燥的事累积,从到谷物的茎和叶子的pre-stored糖类的更大的动员在充满谷物的时期期间;并且更大的根系统和更大的根活动。然而,在超级米饭生产有二个主要问题:以后花的劣等的小穗状花小穗充满谷物的穷人(与早花的优异小穗状花小穗相对照),并且低、不稳定的种子背景率。这里,我们在超级米饭的庄稼生理学考察最近的研究进展,集中于生物特征,收益部件的形成,和人口质量。最后,我们在超级米饭的庄稼生理学上建议进一步的研究。

  • 标签: 超级稻 栽培生理 产量构成因素 亚种间杂种优势 超级杂交稻 籽粒灌浆期
  • 简介:AccordingtothecultivatingpracticeofLarixolgensispulpplantation,IRR(Internalrevenuerate)andNPV(Netpresentvalue)weretakenastwoeconomicindicestostudytheeffectofcultivationmeasurementsoneconomicbenefitofLarixolgensispulpforest.Theresultsshowedthattheeconomicbenefitofthistypeofforestiscloselyrelatedtorotationandsiteclass.Highereconomicbenefitcouldbeobtainedwhentherotationisshorterandsiteclassishigher.Theplantingdensityalsohadanobviousinfluenceoneconomicbenefit.Onthebaseofassuringsurvivalrateandconservingrate,thelessthefeeusedinsoilpreparationandyounggrowthtendingis,thehighertheeconomicbenefitis.Theinfluenceofdeterminedsixcultivationmeas-uresoneconomicbenefitinsequencewastherotation-siteclass-density-managementfeelevel-younggrowthtendingin-tensity-soilpreparationmethods.

  • 标签: 耕作措施 经济利益 Larix olgensis 肉森林
  • 简介:以便调查在里面聚氨酯(PU)膜由特级的丝绸丝心蛋白粉末(SFP)的加入修改了的一篇小说的vitrobiocompatibility,为小直径的脉管的接枝作好准备,PU和SFP与9:1的比率被混合,7:3,5:5,3:7(PU:SFP)使四成为合成材料。未修改的PU和polytetrafluoroethylene(PTFE)作为控制组被增加。CCK-8试金被用来评估这些biomaterials的cytotoxicity。数据用社会科学统计套装软体,和P被处理<0.05被认为统计上重要。坚持并且在标本的表面上HUVEC传播用直接接触耕作被观察。新奇composites的毒性级别是等级01,它在可接受的范围。在除了控制的所有试验性的组,有1:9的比率的SFP/PU有SFP的最少的cytotoxicity性质,和更多的内容在合成没显示出biocompatibility的改进。强烈属于并且在biomaterials的表面上成长了,并且很快增殖了的HUVEC。增长能力与SFP的增加的比例增加了;当SFP的比例等于时,然而,材料的表面上的房间数量减少了或比PU在的大合成。这新奇材料没有cytotoxicity有优秀细胞的亲密关系到HUVEC,这被结束。增加的SFP给PU更好的biocompatibility,当关于最佳混合比率的进一步的研究仍然被需要时。

  • 标签: 人脐静脉内皮细胞 生物相容性 聚氨酯膜 细胞培养 评价 体外
  • 简介:Threepatternsofpotashapplicationwereusedinthecorn-wheatandrice-wheatrotationexperiments,whichwereconductedintheuplandandwetlandofSiyangCounty,northernJiangsuProvuince,andthewetlandofLiyangCity,southernJiangsuProvince.Theresultsof5croppingseasons(2seasons/year)showedthatthedirectresponseofcorntoKwaslargerthanthatofwheat,butnodifferencewasfoundbetweenriceandwheatinSiyangwhenthetotalannualamountofKwasappliedonlyinonecroppingseason.However,theresponseofwheatwasmuchgreaterthanthatofriceinLiyang.Ifpotashwasappliedintheprecedingseason,theresidualeffectofKonwheatwaslargerthanthatonricebothinSiyangandLiyang,butlessthanthatoncorn,Thetotaleffect(directandresidualeffects)ofKappliedtocornorricewasgreaterthanthattowheatinSiyang,butthattowheatwasgreaterinLiyang.ThedirectandtotaleffectsofKapplicationintheuplandwerelargerthanthoseinthewetlandofsiyang;butfrothewetland,theeffectswerelargerinLiyangthaninSiyang,especiallyinthewheatseason.Theresultsdemonstratedthatthemostprofitablepracticetoberecommendedtothelocalfarmerswastoapplyalimitedamountofpotashtoonlyriceorcornbutnottowheat.EquallyapplyinghalfofthetotalannualamoutofKtoeachofthecropsmaybeadvisableinordertolessenpossiblefertilizationrisks.

  • 标签: 轮作 栽培制度 作物产量 碳酸钾 钾肥 应用方式
  • 简介:BasedonthepreviousstudyoncultivationnutritionofCunninghamialanceolataplantationsoffirstgeneration,thecultivationnutritionofC.lanceolataplantationswithmulti-generationwasstudied.Theresultsshowthattherearesignificantdifferencesinthegrowth,developmentandnutrientassimilationamongC.lanceolataplantationswithdifferentgenerationsandnutritionconditions.ThesedifferencesarecloselyrelatedtothelandfertilitydeclineofC.lanceolataplantations.Thispaperde...

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  • 简介:我们调查了高地和稻装饰用的梨树大米怎么在二个耕作方法下面对磷的(P)化肥作出回应。高地米饭Zhonghan3和稻米饭Yangfujing8两个都在潮湿的耕作下面被种(MC,控制)并且有三P的赤裸的干燥耕作(DC)铺平,低(LP,45kg/hm2),正常(NP,90kg/hm2)并且高(HP,135kg/hm2)。当P水平增加了,高地和稻米饭的谷物收益在DC下面增加了。为任何一个米饭在在HP和NP之间的谷物收益没有重要差别,尽管高地米饭稍微增加了,稻米饭稍微在谷物产量减少了。在在LP的DC下面,Zhonghan3显示出更高级的头milled米饭率和更好的外观,煮并且吃比在HP或NP的质量。Yangfujing8类似于Zhonghan3除了之外Yangfujing8最好在NP的外观质量。在MC下面,Zhonghan3让更高级的头milled米饭在在NP的质量的LP并且更好的煮并且吃评价。除了在外观质量,Yangfujing8类似于Zhonghan3。DC改进了高地和稻米饭的头milled米饭率和外观质量,并且煮并且稻米饭的滋养的质量。与稻米饭相比,高地米饭最好处理、滋养、吃的质量。结果建议高地和稻米饭对耕作方法和磷水平不同地作出回应。

  • 标签: 磷水平 水稻 栽培方式 籽粒品质 陆地棉 蒸煮食味品质
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  • 简介:Afieldexperiment,involvinglimeN(calciumcyanamide,CaCN2)fertilizationasacontrolmeasure,wasconductedtostudyenvironmentalproblemsinducedbylong-termheavyNapplicationinJapaneseteafields.Long-termteacultivationcausedserioussoilacidification.Seventy-sevenpercentofthe70teafieldsinvestigatedhadsoilpHvaluesbelow4.0,and9%below3.0,withthelowestvalueof2.7.Moreover,excessNapplicationinteafieldsputathreattoplantgrowth,inducedseriousnitratecontaminationtolocalwater,andcausedhighnitrousoxideloss.ComparedwiththeconventionalhighNapplicationtreatment(1100kgNha-1)withoutlimeN,thelowNapplication(400kgNha-1)withcalciumcyanamideeffectivelystoppedsoilacidificationaswellasachievedthesameorslightlyhigherlevelsinteayieldandintotalNandaminoacidcontentsofteashoots.Theapplicationofcalciumcyanamidecouldbeasuitablefertilizationforthepreventionofenvironmentalproblemsinteacultivation.

  • 标签: 土壤 酸化作用 水污染 氨腈
  • 简介:Since2010,ShandongWomen’sUniversity,asthethirdundergraduatecollegesforfemaleinChinaandfirstinShandongProvince,incumbentlyundertookthemissionofexploringuniquelawforinnovativeandentrepreneurialeducationoffemalecollegestudents,constructedandimplemented“five-oriented”cultivationmodesforinnovativeandentrepreneurialqualityoffemalecollegestudentsbasedonthetheoriesofQualityEducationTheory,EntrepreneurialEcologyTheory,EducationalEngineeringTheory,GenderDifferencesTheory,andDifferentiatedTeachingTheory.Thefirstis“Generalization-Oriented”CultivationObjective,havingestablishedtheinnovativeandentrepreneurialgoalsforfemalecollegestudentsinsixdimensionsincludingconsciousness,thinking,spirit,knowledge,ability,andpersonality.Thesecondis“Integralization-Oriented”CultivationChannel,havingfoundedandintensifiedthecollaborationandlinkageamongchannelslikefirstclassroom,secondclassroom,andplatformonandoffcampus.Thethirdis“Collaboration-Oriented”CultivationMeasures,havingfoundedandintensifiedthematchingandcoordinationamongsystem,mechanism,teachers,resource,andothermeasures.Thefourthis“Circulation-Oriented”CultivationProcess,arrangingandintensifyingstepslikeinvestigationandresearch,designandplan,actionandsupervision,andconcludingandevaluationorderlyoperating,formingclosed-circuitandadvanceincirculation.Thefifthis“Differentiation-Oriented”CultivationMethods.Thismodehasefficientlysolvedtheproblems,likeunclearpurpose,unknowndirection,incompletedistributionandscatteredforces,insufficientconditionsandinefficientmeasures,poorarrangementandflow,neglectingdifferencesandnotfineenough,existingintheinnovativeandentrepreneurialeducationforfemalecollegestudents,whichmadetheirinnovativeandentrepreneurialqualitiesgreatlypromotedandenthusiasmandefficiencytoparticipateintheinnovativeandentrepreneurialactivitiesenhanced.

  • 标签: ENTREPRENEURIAL education ENTREPRENEURIAL QUALITY INNOVATIVE QUALITY