不同类型土壤上接种丛枝菌根真菌对玉米氮素吸收的影响

以分离于华北、华中和华南3个生态区及法国引进的丛枝菌根真菌为试验菌株,采用三室根箱培养方法,研究了在华北、华中和华南3种典型土壤(褐土、棕壤和红壤)上对玉米地上部氮素吸收的影响。结果表明:在褐土上,BEG141显著增加了地上部氮含量,BEG151和BEG221略微增加了地上部氮含量,BEG141、BEG151、BEG168和BEG221显著增加了地上部吸氮量;在棕壤上,接种对地上部氮含量无显著的促进作用,BEG150和BEG151降低了地上部氮含量,BEG221增加了地上部吸氮量;在红壤上,BEG167和BEG221显著增加了地上部氮含量,BEG141降低了地上部氮含量,BEG150、BEG168和BEG221显著增加了地上部氮含量。

The Effects of Six Arbuscular Mycorrhizal Fungi on N Uptake of Maize in Three Different Type Soils

The effects on maize N uptake by arbuscular mycorrhizal fungi screened from South China, Center China and North China in cinnamon soil, brown soil and red soil collected in above three regions were investigated using three-compartment-glass-bead culture system. The results showed that BEG141 significantly, BEG151, BEG221 slightly increased N content of maize shoot, BEG141, BEG151, BEG168 and BEG221 increased N uptake on cinnamon soil, no fungi improved, BEG150 and BEG151 decreased the N content of maize shoot, BEG221 improved N uptake of maize shoot on brown soil, BEG167 and BEG221 elevated, BEG141 lowered the N content of maize shoot, while BEG221 elevated the N uptake on red soil.