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化肥种类繁多,常用的就有10多种。有些化肥施用于蔬菜后,可以提高品质与产量,但也有些化肥虽然施于蔬菜能提高产量,却会使蔬菜产生毒素污染,引起食菜者中毒,甚至危及生命。 例如:硝酸铵和其它硝态氮肥一般均不适宜施用于蔬菜,特别是白菜、青菜、菠菜等叶菜类,因为硝态氮肥施入菜田后,会使蔬菜硝酸盐含量成倍增加,硝酸盐在人体中容易被还原成为亚硝酸盐,亚硝酸盐是一种剧毒品,对人体危害极大,是一种致癌物质。 氯化铵、氯化钾等含有氯成分的化肥,不宜施用于西红柿、马铃薯、甘薯、地黄等作物,
A wide range of fertilizers, there are more than 10 commonly used. Some fertilizers applied to vegetables can improve quality and yield. However, although some fertilizers applied to vegetables can increase yields, they can cause toxin contamination in vegetables and poison vegetables and even life-threatening ones. For example, ammonium nitrate and other nitrate nitrogen fertilizers are generally not suitable for application to vegetables, especially cabbage, greens, spinach and other leafy vegetables, as nitrate nitrogen fertilizes the vegetable fields, causing double the nitrate content in vegetables, Salt in the human body easily be reduced to nitrite, nitrite is a highly toxic drugs, a great harm to the human body, is a carcinogen. Ammonium chloride, potassium chloride and other chlorine containing chemical fertilizers, should not be applied to tomatoes, potatoes, sweet potatoes, Rehmannia and other crops,