看外形一些菜农为赶早市或增加重量（果实在未成熟时质量最重），在西红柿未成熟时在外部涂抹激素，使其变红催熟。这种西红柿实际上是“假熟”，手感硬，外观红，一端似桃子般凸起。无根须的绿豆芽一般施过尿素。西瓜瓤长了一团一团茎的，是滥施氮肥所致。辨颜色太绿，绿... Look at the shape of some vegetable farmers to catch up with the morning market or increase the weight (the quality of the fruit immature), unripe tomatoes in the external application of the hormone, making it red ripe. This tomato is actually a “fake cooked”, feel hard, the appearance of red, peach-like bulge at one end. Roots-free mung bean sprouts generally applied urea. Watermelon 瓤 long a mass of stems, is excessive nitrogen fertilizer caused. Identify the color is too green, green ...