怎样确定什么时候该给花浇水?
①根据盆土颜色判定。观察盆土颜色有无变化,如盆土颜色变浅,表面发白,表土干燥,表示盆土已干盆花缺水,要及时给花浇水;如盆土颜色深,呈深黑色时,表示盆土潮湿,暂不需要浇水。
②根据敲盆听音判定。用手轻轻敲击花盆,如发出的声音清脆,表示盆土干燥,盆花缺水,需及时给花浇水;如发出的声音低沉发闷,表示盆土潮湿,暂不需要浇水。
③掀土判定。用手指掀盆土,如土壤一掀即碎,成粉末状,表示盆土已干,盆花缺水,应立即浇水;如土壤成团粒状或片状,表示盆土潮湿,暂不需浇水。
④根据花卉本身判定。如果花卉萎蔫不振,叶黄枝枯,缺乏活力,表示盆花缺水,应立即浇水。
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