团粒结构 crumb structure

互联网2013-11-14

749

　　土壤中由若干单粒粘结在一起形成为团聚体的一种土壤结构。因为单粒间形成小孔隙、团聚体间形成大孔隙，所以与单粒结构相比较，其总孔隙度较大。小孔隙能保持水分，大孔隙则保持通气，团粒结构土壤能保证植物根的良好生长，适于作物栽培。团粒是通过干湿交替，高等植物根、土壤动物和菌类的活动，由多种微生物分泌的多糖醛酸甙、粘粒矿物以及铁、铅的氢氧化物和腐殖质等胶结而成。

相关产品推荐

Trimethyl-Histone H3 (Lys9) Peptide, biotin conjugate，Histones are basic nuclear proteins that are responsible for the nucleosome structure of the chromosomal fiber in eukaryotes.，阿拉丁

￥3058.90

Recombinant-Rat-Growth-hormone-inducible-transmembrane-proteinGhitmGrowth hormone-inducible transmembrane protein Alternative name(s): Mitochondrial morphology and cristae structure 1; MICS1

￥11452

Recombinant-Saccharomyces-cerevisiae-Mitochondrial-organizing-structure-protein-2MOS2Mitochondrial organizing structure protein 2; MitOS2 Alternative name(s): Mitochondrial inner membrane organization component of 27 kDa

￥10850

Recombinant-Mouse-Growth-hormone-inducible-transmembrane-proteinGhitmGrowth hormone-inducible transmembrane protein Alternative name(s): Mitochondrial morphology and cristae structure 1; MICS1

￥11452