一、白菜、甘蓝、花心菜。这三种蔬菜种子,可采用平整硬物压搓的方法进行鉴别:如果经压搓的种子,粒皮脱离,则是去年的陈种(即上一年的陈种);如果压搓的种子,种粒发黑或呈老黄色,则是多年的陈种;如果压搓的种子粒皮不开,种粒呈 First, cabbage, cabbage, cabbage. The three kinds of vegetable seeds, can be used to determine the method of flat hard pressing rub: If the pressure by rubbing the seed, the skin off, it is the last year’s Chen species (that is, the previous year’s Chen species); , Seed black or yellow, is the Chen species for many years; if the pressure rubbing the seed peel is not open, seed was