含硼氧化物对根际土壤性质和油菜根系形态的影响

通过根箱试验,将含硼氧化物加入到黄棕壤中,观察它们对根际土壤性质的影响。结果表明,含硼氧化物的加入对土壤酸度起到改善作用,提高了土壤pH值,降低了土壤中交换性酸含量。与对照相比,含硼针铁矿提高了土壤中交换性钾、钙、镁的含量。其中,交换性酸、交换性钙和交换性镁的含量均表现出正根际效应,而根际土壤pH值和交换性钾的含量却比非根际低。通过WinRHIZO 2.0根系扫描仪对油菜根系形态进行了分析,结果发现,含硼氧化物的加入使油菜根长、根尖数、根体积以及根表面积增加,促进了油菜根系的生长。

Influence of Boron-containing Oxides on Rhizosphere Soil Properties and Root Morphology of Rape Seedling

Rhizobox experiment was conducted to investigate the impact of boron-containing oxides on rhizosphere soil proprieties. Boron-containing oxides were found to be more effective in addressing soil acidosis by increasing soil pH and decreasing soil exchangeable acid than the oxide which was not doped boron. It was found that the exchangeable K, Ca and Mg content of the soil treated with boron-containing oxides was higher than that of control. The exchangeable acid and exchangeable Ca and exchangeable Mg all showed a positive rhizosphere effect; whereas the soil pH and exchangeable K in the rhizosphere soil was lower than that in the bulk soil. Rape seedling root morphology were analyzed using a WinRHIZO 2.0 Scanner Instrument, it was showed that the rape roots growing on the boron-containing oxides treatments were more developed by increasing the total root length, root area, root tips, root volume and root surface area.