本文選題：闊葉樹(shù)種 + 微生物　； 參考：《廣西大學(xué)》2015年碩士論文

【摘要】：自20世紀(jì)80年代,我國(guó)廣西、廣東、福建、云南、海南、湖南等地相繼開(kāi)始大力發(fā)展優(yōu)良闊葉樹(shù)種人工林,并開(kāi)展了較多材性、生長(zhǎng)、栽培技術(shù)等的研究。但由于其發(fā)展起步較晚,有些方面的研究較少,特別是有關(guān)林地土壤肥力的系統(tǒng)研究方面。如何更好發(fā)揮優(yōu)良闊葉樹(shù)種生產(chǎn)優(yōu)良木材,保持水土、提高肥力,改善地力的作用,是目前人們關(guān)注的熱點(diǎn)。為比較黑木相思(Acacia meianoxyion)、米老排(Mytilaria laosensis)、紅椎(Castanpsis hystrix)、黧蒴(Castanopsis fissa)、火力楠(Michelia macclurei)五種南方優(yōu)良闊葉樹(shù)種人工林的土壤肥力,并揭示土壤理化性質(zhì)間的相互關(guān)系。本研究以相同林齡(12年)和立地條件的五種人工林為研究對(duì)象,測(cè)定其土壤微生物數(shù)量、酶活性、養(yǎng)分含量、土壤酸度、腐殖質(zhì)及土壤物理性質(zhì)并測(cè)定凋落物厚度及營(yíng)養(yǎng)元素含量。對(duì)各土壤肥力因素進(jìn)行分析得出以下結(jié)果：1.五種人工林土壤微生物數(shù)量均為：細(xì)菌固氮菌放線菌真菌,且細(xì)菌數(shù)量占微生物總數(shù)的絕大多數(shù)。細(xì)菌總數(shù)：火力楠黧蒴紅椎黑木相思米老排。不同樹(shù)種微生物數(shù)量差異不顯著。2.五種人工林土壤酶活性為：蔗糖酶過(guò)氧化氫酶蛋白酶脲酶酸性磷酸酶,各林分不同土壤酶活性差異較大,其中,米老排林蔗糖酶、蛋白酶、酸性磷酸酶和過(guò)氧化氫酶活性均最高,脲酶活性?xún)H次于黑木相思林�；鹆﹂趾图t椎林各酶活性均較低。不同樹(shù)種過(guò)氧化氫酶活性差異不顯著,其他酶活性差異極顯著。3.五種人工林土壤物理性質(zhì)存在差異,黧蒴林持水性最好,火力楠林次之,且優(yōu)于紅椎林,黑木相思林土壤持水性?xún)?yōu)于米老排林。容重：黧蒴火力楠紅椎黑木相思米老排,總孔隙度：黧蒴火力楠米老排紅椎黑木相思。黧蒴林土壤團(tuán)粒狀況最好,紅椎林次之,黑木相思林和米老排林較差。4.五種人工林土壤呈強(qiáng)酸性,pH為4.1-5.1,土壤pH值：黧蒴黑木相思紅椎火力楠米老排,交換性酸：黧蒴火力楠黑木相思紅椎米老排,水解性總酸度：黧蒴紅椎火力楠黑木相思米老排,受土壤養(yǎng)分含量的影響,黧蒴林交換性鋁的百分比最低,土壤鋁毒作用最小。5.五種人工林土壤有機(jī)質(zhì)：黧蒴紅椎火力楠米老排黑木相思；胡敏素占腐殖質(zhì)百分比最高,紅椎火力楠米老排黧蒴黑木相思；胡敏酸百分比：米老排黑木相思火力楠黧蒴紅椎；富里酸百分比：黧蒴黑木相思火力楠紅椎米老排。不同樹(shù)種富里酸含量差異顯著。腐殖質(zhì)各成分間有一定相關(guān)性。土壤供氮水平：黧蒴米老排紅椎黑木相思火力楠,供磷水平：米老排黑木相思黧蒴紅椎火力楠,供鉀水平：黧蒴紅椎黑木相思米老排火力楠。不同樹(shù)種全鉀含量差異顯著。試驗(yàn)土壤Al、Fe含量較高,Mg、Mn、Zn含量較低,不同樹(shù)種五種元素含量差異均不顯著。6.試驗(yàn)地林下凋落物較多,凋落物厚度1.oo-2.87cm,黧蒴=火力楠米老排紅椎黑木相思。凋落物有機(jī)碳量：紅椎黑木相思黧蒴米老排火力楠。全氮：黑木相思米老排紅椎黧蒴火力楠。全磷：米老排黧蒴黑木相思紅椎火力楠。全鉀：米老排黧蒴火力楠紅椎黑木相思。C/N比：火力楠紅椎黧蒴米老排黑木相思。凋落物厚度、全氮、全磷量及C/N比差異極顯著。凋落物Mg、Mn、Zn含量高于土壤,Al、Fe含量遠(yuǎn)小于土壤。樹(shù)種間凋落物Al、Mn含量差異顯著,Mg含量差異極顯著,Fe、Zn含量差異不顯著。7.土壤各理化性質(zhì)及生物活性間存在復(fù)雜的相關(guān)性,不同土壤因子對(duì)地力影響不同,土壤物理性質(zhì)及酸度是首要影響因素,養(yǎng)分含量是重要影響因素,微生物數(shù)量及酶活性是次要影響因素。五種樹(shù)種人工林土壤肥力綜合排序：黧蒴紅椎米老排火力楠黑木相思。
[Abstract]:Since 1980s, China, Guangxi, Guangdong, Fujian, Yunnan, Hainan, Hunan and other places have begun to develop excellent broad-leaved tree plantations, and have carried out a lot of research on timber, growth and cultivation techniques. However, because of their late development, there are few studies in some aspects, especially on the systematic Research on the soil fertility of woodland. How to give good use of fine hardwood trees to produce fine wood, keep soil and water, improve fertility and improve the effect of soil fertility is the focus of attention at present. In order to compare the black wood acacia (Acacia meianoxyion), the Mytilaria laosensis, the Castanpsis hystrix, the Castanopsis fissa, and the Phoebe (Michelia macclurei) in the South (Michelia macclurei) Soil fertility of excellent broad-leaved tree species and the relationship between soil physical and chemical properties were revealed. In this study, the soil microbial number, enzyme activity, nutrient content, soil acidity, humic quality and soil physical properties were measured in five artificial forests of the same age (12 years) and site conditions, and the thickness and nutrition of litter were measured. The following results were obtained from the analysis of soil fertility factors: 1. the number of soil microbes in the five species of plantation were all: bacterial actinomycetes fungi, and the number of bacteria accounted for the majority of the total microbes. The total number of bacteria: the total number of bacteria: Mi Lao. The number of different species of microbes of different species was not significant.2 The activities of the soil enzyme in the five plantations were: invertase catalase protease acid phosphatase, and the activities of the enzymes in different stands were different. Among them, the activity of invertase, protease, acid phosphatase and catalase in the rice old row was the highest, and the activity of urease was only in black wood Acacia. The difference of catalase activity of different species was not significant, the activity difference of other enzymes was very significant, the soil physical properties of the five plantations were different, the water holding ability of the capsule forest was the best, the firepower forest was the second, and the red forest was superior to the red forest. The water holding capacity of the black wood Acacia forest was better than that of the rice old forest. The bulk density was that of the black wood black wood of the capsule of.3.. The total porosity: the black wood black wood Acacia of the capsule firepower, the best of the soil pellet in the Castanopsis capsule, the second of the red vertebra forest, the strong acidity of the five species of.4. plantation in the black wood and the rice old row forest, the pH 4.1-5.1, the soil pH value: the exchange acid: the exchange acid: the black wood of the capsule firepower and the black wood of the black wood Mi Lao row, the total hydrolytic acidity: the black wood and black wood of the capsule of the capsule of the capsule, the percentage of the exchangeable aluminum in the capsule is the lowest, the soil Al toxicity is the lowest in the soil, and the soil organic matter of the soil al poison is the smallest.5. five species of artificial forest. The age of the black wood and the black wood of nanmu, the percentage of Hu Min acid: the black wood of the black wood, the percentage of fulvic acid: the rich acid content of different tree species is significant. There is a certain correlation between the rich acid content of different species. Fire Nan, the level of phosphorus supply: the black wood of the black wood of the black wood, the level of potassium supply: the potassium content of the black wood of the capsule: the total potassium content of the different tree species is remarkable. The soil Al, the Fe content is high, the content of Mg, Mn, Zn is low, and the difference of the content of the five elements of different tree species is not significant and the litter is more and more litter under.6. test. The thickness of the falling substance 1.oo-2.87cm, the capsule = the old red vertebra of the firepower and the black wood of the red vertebra. The amount of organic carbon of the litter. The thickness of litter, total nitrogen, total phosphorus and C/N ratio were very significant. The content of litter Mg, Mn, Zn was higher than that of soil, Al, Fe content was much lower than that of soil. The contents of Al, Mn in tree species were significantly different, Mg content was very significant, Fe, Zn content had no significant physical and biological properties and bioactivity of.7. soil. There is a complex correlation between different soil factors and different soil factors. Soil physical properties and acidity are the most important factors, nutrient content is an important factor, microorganism quantity and enzyme activity are the secondary factors. The soil fertility of the five species of tree plantations is sorted in a comprehensive way.
【學(xué)位授予單位】：廣西大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類(lèi)號(hào)】：S714

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 何斌;韋善華;張偉;唐天;羅柳娟;劉紅英;劉莉;覃祚玉;;黑木相思人工林營(yíng)養(yǎng)元素生物循環(huán)特征[J];東北林業(yè)大學(xué)學(xué)報(bào);2012年02期

2 黃壽先,李耀斌,周傳明,呂世安;廣西蒼梧縣大葉櫟生長(zhǎng)量變異規(guī)律的初步研究[J];廣西林業(yè)科學(xué);2001年S1期

3 藍(lán)學(xué);梁有祥;韋中綿;玉桂成;;火力楠的生物學(xué)特性及綜合利用研究進(jìn)展[J];廣西農(nóng)業(yè)科學(xué);2010年03期

4 蒙奕奕;石曉蒙;黃壽先;林正聰;譚飛燕;黃家華;;23年生大葉櫟人工林的生長(zhǎng)規(guī)律研究[J];廣東農(nóng)業(yè)科學(xué);2013年07期

5 陳志榮,黃少偉;火力楠人工林生長(zhǎng)分析[J];湖南林業(yè)科技;2003年02期

6 朱鳳平;蔣q，

本文編號(hào)：2006387