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在农药与化肥大量使用的今天,买菜成了一门很深的学问。很多蔬菜由于农药、化肥的过量使用,致使蔬菜等农作物中有害残留物严重,危害人体健康,所以现在买菜可要仔细选择。买菜需知西红柿顶部长着桃子似的凸起,那是点过激素的标志;青菜太绿,绿得都发黑了,那肯定是化肥过量。因为给韭菜洒的农药会在韭菜叶内积累汞,所以最好不买;绿豆芽光溜溜地不长须根,是因为施过尿素;西瓜瓤长一团一团的茎,是滥施氮肥所致。
In the large-scale use of pesticides and fertilizers today, buying vegetables has become a very deep knowledge. Many vegetables due to excessive use of pesticides, fertilizers, resulting in vegetables and other harmful substances in crops serious, endangering human health, so now you have to carefully choose to buy food. Grocery shopping need to know the top of the tomato-like peaches protruding, it is a sign of hormones; vegetables are too green, the green has been black, it must be over-fertilization. Because pesticides leek to sprinkle leek leaves in the accumulation of mercury, so it is best not to buy; mung bean sprouts barely long fibrous roots, because the applied urea; watermelon 瓤 long a mass of stems is indiscriminate nitrogen fertilizer To