蔬菜保护地生产，通常是多品种、多层次、高效益的集约化栽培。生长期长，营养消耗大，需求多，尤其需要合理搭配氮、磷、钾、镁、锰、硼等营养元素的浓度比例，满足生长之需。但在生产中，往往由于施肥量或使用肥料种类比例不当以及灌溉的不合理，而产生肥料过盛危害，造成肥? Protected vegetable production, usually multi-species, multi-level, cost-effective intensive cultivation. Growing long period, nutrition consumption, demand more, especially with a reasonable need of nitrogen, phosphorus, potassium, magnesium, manganese, boron and other nutrients concentration ratio to meet the growth needs. However, in production, often due to the amount of fertilizer or the use of inappropriate types of fertilizers and irrational irrational irrigation, resulting in excess fertilizer harm, resulting in fat?