The result shows that,under Al stress,there is a significant genotypic difference among various corns in the decrease of the relative root elongation rate,the increase of Al concentration in the root tip and the inhibition of the plant height,the stem diameter and the average biomass.

Based on the direct shear test results,the effect of roots content on the two indices of soil shear strength(c,φ)is studied;and the reinforcement effect formula of roots is deduced so as to use for reference in the design and construction of slope virescence.

Spatiotemporal variation of soil moisture and its relations with Artemisia halodendron root water content as affected by rainfall;

N content of roots is affected by type of N fertilizer,and significant differences among N fertilizers are observed.

Based on the experiments,this article emphasizes the influence from aluminum and magnesium content to the etching performance of microcrystalline zinc board.