橡胶割面条溃疡是橡胶生产上的严重病害之一,轻则影响胶树产量,重则造成整个割面溃烂,失去胶树的经济意义。近年来河口地区该病日趋发展,直接威协着胶树生产和扩大。以往多用有机汞制剂防治,虽有一定效果但药源成问题。为此我们自今年4月起,连续进行了5次抗生菌防治试验,以期得到内吸性强、防效高、使用简便的抗生素服务于生产。现将防治试验总结如下:一、抗生素粗制品对橡胶实生树割面条溃疡病的防治:我们对室内筛选出抑制条溃疡病菌能力强的11株不同抗生菌进行了发酵生产,将发酵液离心浓缩制成抗生菌发酵液浓缩物以及化学粗提制品,根据生产上使用的实际,从难从严设计试验,涂药只涂一次,以最大量的菌源接种于整个割面,造成严重病害,分 Rubber cut noodles ulcer rubber production is one of the serious diseases, ranging from the impact of rubber tree yield, weight is caused by the entire cut surface ulceration, loss of the economic significance of plastic trees. In recent years, the disease in estuaries is developing day by day, and the direct production and expansion of gum trees are directly linked with them. In the past the use of organic mercury preparation control, although a certain effect, but the drug into a problem. For this reason, we have carried out 5 times of antibiotic prevention and control experiments since April this year in order to obtain antibiotics with strong internal absorption, high anti-efficacy and easy-to-use services. Prevention and control experiments are summarized as follows: First, crude antibiotics crude rubber tree cut canker disease prevention and control: we screen out the ability to inhibit the canker bacteria 11 strains of different antibacterial fermentation was carried out, the fermentation liquid was centrifuged and concentrated Produced antibacterial fermentation broth concentrate and crude chemical products, according to the actual use of the production, from the hard to rigorous design test, only coated once coated with the maximum amount of bacteria inoculated throughout the cutting surface, causing serious disease, Minute