Annuals, as a general rule , are very responsive to phosphorus fertilization.通常说来,对一年生植物施用磷肥是相当有效的.Phosphorus is essential to plant growth.植物生长需要磷.A stick of phosphorus fell on the floor.一块磷条掉在地上....
white phosphorus白磷, 黄磷Phosphorus and its compounds are non renewable and non replaceable limited resources.磷是一种不可更新、难以替代的有限自然资源.Phosphorus is essential to plant growth.植物生长需要磷.red phosphorus红磷, 赤磷White or Yellow phosphor...