词根：arid
arid 干旱的；不毛的，[农] 荒芜的
aridity 干旱；乏味
1.The thicker the straw mulching, the more significant the effect. But the effect was limited by soil aridness and growth stage of maize.
稻草覆盖可减轻玉米旱害，其效果随着覆盖量的加大而越明显，但受干旱程度和生育期影响。
2.The thicker the straw mulching, the more significant the effect. But the effect was limited by soil aridness and growth stage of maize.