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上海郊区秋、冬两季找培的青菜由于病毒病的危害,历年来对青菜的产量和品质有不同程度的影响。1986年我县在严桥、洋泾、六里、花木、杨思和北蔡等地的秋、冬季青菜进行 EF 生长促进剂试验。观察其促进植株生长,增强对病毒病的抗病力的作用。试验结果表明,使用 EF 能减轻青菜病害并有增产效果。一、材料与方法1.材料:EF 生长促进剂是从桉树叶中提取的一
Shanghai suburbs autumn and winter to find cultivated vegetables due to the dangers of the virus disease over the years on the yield and quality of vegetables have varying degrees of impact. In 1986, our county experimented on EF growth promoters in autumn and winter vegetables in Yanqiao, Yangjing, Liuli, Huamu, Yangsi and Beicai. Observe its role in promoting plant growth and enhancing the resistance to viral diseases. The test results show that the use of EF can reduce vegetables disease and increase yield. First, the material and methods 1 material: EF growth promoter is extracted from the leaves of eucalyptus