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目前国外生产蔬菜采用很多新技术。现选其中几种简介如下:一、工厂化生产日本、美国、丹麦、苏联、捷克等国家都有了生产蔬菜的工厂。这种工厂不用化肥、农药,而是在培养床上播种、浇水、发芽。最初两天放在暗室里,利用营养液快速
At present, a lot of new technologies are used in producing vegetables abroad. Here are some of the briefs are as follows: First, the factory production Japan, the United States, Denmark, the Soviet Union, the Czech Republic and other countries have produced vegetables factory. Instead of fertilizers and pesticides, this plant sowed, watered and sprouted in a culture bed. The first two days in the dark room, the use of nutrient solution quickly