一、增施有机肥 实践经验证明:在蔬菜生产上大量施用有机肥,不仅可以减少蔬菜的硝酸盐含量,而且还可起到保持地力、减少污染环境等作用。 二、合理施用氮肥 大量的研究资料表明,偏施氮肥和滥施氮肥是造成蔬菜硝酸盐大量积累的主要原因。因此,应根据 First, the application of organic fertilizer Practical experience shows that: the large-scale application of organic fertilizer in vegetable production, not only can reduce the nitrate content of vegetables, but also can play a role in maintaining soil fertility and reducing pollution of the environment. Second, the rational use of nitrogen fertilizer A large number of research data show that partial nitrogen fertilizer and excessive nitrogen fertilizer is caused by a large number of vegetable nitrate accumulation of the main reasons. Therefore, should be based on