我国现有白菜品种一般生育期较长，多在９０天左右，而且只适应长江以北的温带地区在立秋后的低温条件下种植。多年来，我国众多的蔬菜育种专家曾立题拟培育出一种既适于我国北方又适于我国南方种植的白菜新品种，但终因攻克不了抗高温高湿性差、病害重、产量低等难关而未... The existing cabbage varieties of our country generally have a longer growing period, mostly for about 90 days, and are only suitable for planting in the temperate regions north of the Yangtze River after the autumn of autumn. Over the years, many vegetable breeding experts in our country have proposed to cultivate a new cabbage variety that is suitable for planting in the north of our country and suitable for planting in the south of our country. However, the ultimate cause can not overcome the problems of poor high temperature and high humidity, heavy disease and low yield Tough but not ...