家庭养花,难点是盆底植料的排水透气。报刊杂志介绍的盆底植料,不外乎三种:一是填砖块;二是垫瓦砾;三是铺煤渣。这些植料弊多利少:砖块瓦砾挤占花盆容积,减少了营养土的容量,且其中易藏匿害虫,滋生病毒,既难觉察。又难杀除。另外它们吸水后容重特大,移动花盆十分吃力,尤不适宜妇女和老人。 Family flower, the difficulty is the drainage of pelvic plant material breathable. Newspaper and magazine described the pelvic plant material, no more than three: one is filling brick; two is a rubble pad; three is paving slag. These plants do more harm than good: brick rubble squeezes the flower pot volume, reduces the capacity of nutritious soil, and one of them is easy to hide pests and breed viruses, which are hard to detect. Hard to kill except. In addition, they absorb the water after the exceptionally large capacity, moving the pot is very difficult, especially unsuitable for women and the elderly.