【摘要】：【目的】探明不同種類的植物對(duì)其根際土壤微生物數(shù)量分布與群落結(jié)構(gòu)的影響。【方法】將微生物計(jì)數(shù)法與磷脂脂肪酸(PLFA)法相結(jié)合,分析比較麥積山景區(qū)3種典型裸子植物根際土壤微生物的數(shù)量分布和PLFA種類、含量及主成分結(jié)構(gòu)。【結(jié)果】3種植物根際土壤微生物數(shù)量均以細(xì)菌最多,真菌最少;總PLFA含量以紅豆杉[Taxus chinensis(Pilg)Rehder.]最高、種類最多,日本落葉松[Larix kaempferi(Lamb)Carriere.]最低,紅豆杉與云杉(Picea asperata Mast)PLFA主要成分相似度高于日本落葉松;外來(lái)種日本落葉松無(wú)論微生物數(shù)量,還是種類以及PLFA結(jié)構(gòu)組成與紅豆杉、云杉均有較大的差異,多樣性顯著下降�！窘Y(jié)論】與土著裸子植物相比,外來(lái)種日本落葉松能明顯改變根際土壤微生物數(shù)量分布與群落結(jié)構(gòu)。
[Abstract]:[objective] to investigate the effects of different species of plants on the distribution and community structure of microbes in rhizosphere soil. [methods] microbial counting method was combined with phospholipid fatty acid (PLFA) method. The quantitative distribution, PLFA species, content and principal component structure of the rhizosphere microbes of three typical gymnosperms in Maiji Mountain area were analyzed and compared. [results] the number of microbes in rhizosphere soil of the three plants was the most, and the fungi was the least. The total PLFA content of Taxus chinensis (Pilg) Rehder. was obtained from Taxus chinensis (Pilg) Rehder. Larix kaempferi (Lamb) Carriere. The similarity of the main components between Taxus and Picea asperata Mast was higher than that of Japanese larch. [conclusion] compared with native gymnosperms, the exotic species Larix gmelini can significantly change the distribution and community structure of microbes in rhizosphere soil.
【作者單位】： 天水師范學(xué)院生物工程與技術(shù)學(xué)院甘肅省農(nóng)業(yè)微生物重點(diǎn)實(shí)驗(yàn)室;
【基金】：國(guó)家自然科學(xué)基金項(xiàng)目(No.31060065)~~
【分類號(hào)】：S154.3
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本文編號(hào)：2120314