一、肥害肥害是因肥料施用不当对蔬菜秧苗造成的危害。肥害初期表现从植株下部叶片开始,中午萎蔫,早晚可恢复,严重时早晚也难恢复。其发生原因是配制营养土时掺入过量化肥或未腐熟的畜禽粪,造成土壤水分渗透压力过大,根系吸水困难而“烧苗”。在配制营养土时使用搓碎过筛、充分腐熟的有机肥,并严格按技术要求配比,追肥要结合浇水进行。一旦发生肥害,要立即浇大水,可减轻或缓解症状。 First, fat fertilizer damage due to improper application of fertilizer on the vegetable seedlings caused harm. Early performance of fertilizer from the lower leaves of plants began, wilting at noon, sooner or later recover, sooner or later, severe hard to recover sooner or later. The reason is due to the preparation of nutrient soil incorporation of excessive fertilizer or not maturity of livestock and poultry manure, resulting in excessive soil water infiltration pressure, the root of water-absorbing and “burning seedlings.” In the preparation of nutrition soil use graze screening, full maturity of organic fertilizer, and in strict accordance with the technical requirements ratio, top dressing should be combined with watering. In the event of fertilizer damage, immediately pour water, can reduce or relieve symptoms.