When the first flowers show, give the plants some potash fertilizer.
开出第一朵花时,给植株施上钾肥。
英语百科
Potash
(重定向自Potash fertilizer)
Potash/ˈpɒtæʃ/ is any of various mined and manufactured salts that contain potassium in water-soluble form. The name derives from pot ash, which refers to plant ashes soaked in water in a pot, the primary means of manufacturing the product before the industrial era. The word potassium is derived from potash.