磷素缺乏会影响核蛋白形成,抑制细胞分裂与增殖,使作物生长发育延缓或停止。玉米缺磷,苗期生长缓慢,叶片呈紫红色;棉花缺磷,植株矮小,叶片小,叶色暗,茎和叶红绿比例失调;水稻缺磷,叶片小,上位叶片直立;叶色暗绿;高粱缺磷,叶片变窄,呈暗绿色;大豆缺磷,叶色浓绿,叶片尖窄直立,植株矮小,生长缓慢。发现上述症状,要及时追施磷肥 Phosphorus deficiency can affect the formation of nuclear proteins, inhibit cell division and proliferation, so that crop growth and development delay or stop. Phosphorus deficiency in maize, slow growth at seedling stage, purple leaves; cotton lack of phosphorus, short plants, small leaves, dark leaves, dark green stems and leaves; rice phosphorus deficiency, leaves small, upper leaves erect; Green; Sorghum phosphorus deficiency, leaves narrowed, dark green; Soybean phosphorus deficiency, dark green leaves, narrow tip erect, short plants, slow growth. Found the above symptoms, we must promptly topdressing phosphate fertilizer