蔬菜生长发育所必须的大量元素,除氮磷钾外,钙也是同等重要的。近年来,在蔬菜生产中,已出现了缺钙症状,如西红柿裂果病,脐腐病,大白菜干烧心等。近十年我们对蔬菜施肥做了系统试验、示范、推广,结果表明,蔬菜施用钙肥,增产效果明显,对防治一些病害有较好的作用。 供试蔬菜有402西红柿、青帮叶 Vegetables a large number of elements necessary for growth and development, in addition to nitrogen, phosphorus and calcium, calcium is equally important. In recent years, in vegetable production, calcium deficiency symptoms have emerged, such as tomato cracking fruit disease, umbilicus rot, cabbage dry heart. In the past ten years, we have systematically tested, demonstrated and popularized the fertilization of vegetables. The results show that the application of calcium fertilizer to vegetables has obvious stimulation effect and good effect on controlling some diseases. There are 402 tomatoes for vegetables, green leaves