蔬菜施肥过去以氮磷钾三要素为主,其中施氮比例最大。近年来国内外发现由于缺钙造成蔬菜产量降低、品质恶劣的现象十分严重。钙是植物需要的大量营养元素之一,蔬菜生长不仅需钙量大,而且在整个生长过程的任何时期都很需要。因此在缺钙的酸性土壤施钙对蔬菜生长有良好效果,甚至在钙含量丰富的土壤栽蔬培菜,如甘蓝、大白菜、番茄等也屡见发生缺钙症,所以必须引起重视。 Vegetable fertilization in the past to the three elements of nitrogen, phosphorus and potassium-based, of which the largest proportion of nitrogen. In recent years at home and abroad found that due to calcium deficiency caused by lower vegetable yield, poor quality of the phenomenon is very serious. Calcium is one of the macronutrients that plants need, and growing vegetables requires not only large amounts of calcium but also anytime throughout the growth process. Calcium in acidic soil so calcium has a good effect on the growth of vegetables, and even calcium-rich soil in vegetables such as cabbage, cabbage, tomatoes are also common occurrence of calcium deficiency disease, it must be taken seriously.