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近几年来,霜霉病对白菜的危害比较严重,造成产量不稳。1974年,由于10月上旬到11月上旬(白菜结球盛期)的40天内,雨日多达14天,湿度大,温度偏低,白菜霜霉病在郑州市全郊区流行。在霜霉病危害比较严重的情况下,石羊寺一队广大贫下中农深入批林批孔,进一步树立人定胜天的思想,战灾害,夺丰收,23亩白菜获得了平均亩产净菜8,000斤的较高产量。主要采取了以下措施: 推广抗病高产品种根据几年来的观察,叶色深的白菜,抗病性较强。大面积生产的二包头品种中,青帮就比白帮的抗病。1974年26个白菜品种观察对比,表现较好的有天津青麻叶系统的几个品种、“石特1号”、“小青口”等,这些品种的特点是生长势较旺,抗病性较强,适应性强,植株直立,适宜密植。如生
In recent years, downy mildew on cabbage more serious harm, resulting in unstable output. In 1974, the cabbage downy mildew prevailed in the whole suburbs of Zhengzhou City due to the rainy days of up to 14 days, high humidity and low temperature within 40 days from early October to early November (the peak of cabbage balling). In the more serious cases of downy mildew, Shiyang Temple, a group of peasants and poor peasants and peasants in-depth approved Lin approved hole, to further establish the idea of people will prevail, war disaster, harvest, 23 acres of cabbage obtained an average of 8,000 kg per mu net food more high production. Mainly taken the following measures: Popularize disease-resistant high-yield varieties According to the observations over the years, the dark-colored cabbage leaves, strong resistance. Large-scale production of the two Baotou varieties, Green Gang to white than the disease-resistant. The observation and comparison of 26 Chinese cabbage varieties in 1974 showed that there were several varieties of Tianjin green tea leaf system better, such as “Shi Te No.1” and “Xiao Qing Kou”. The characteristics of these varieties are the growth vigor, disease resistance Strong sex, adaptability, plant erect, suitable for close planting. As raw