论文部分内容阅读
引言磷是维持植物生长所必须的元素,它在植物体内是移动的,而在土壤系统中是不易流动的。所以,当土壤溶液中磷的浓度本来就低而固态磷又不能充分代换进入溶液中时,就有可能发生缺磷现象。由于这些原因,在某一生长阶段,随时都有发生缺磷的可能。磷在植物体内的这种高流动性,也可能使生长季节中的某些阶段积累充足的磷,来维持植物的生殖生长,通过磷的再分配生产果实。
INTRODUCTION Phosphorus is an essential element for plant growth. It is mobile in plants but not flowable in soil systems. So, when the concentration of phosphorus in the soil solution is inherently low and the solid phosphorous does not fully substitute into the solution, phosphorus deficiency may occur. For these reasons, it is possible that phosphate deficiency may occur at any stage of growth. This high mobility of phosphorus in plants may also allow sufficient levels of phosphorus to accumulate at certain stages of the growing season to sustain the plant’s reproductive growth and to produce fruits through the redistribution of phosphorus.