目前海南垦区橡胶树有六种根病,其中以红根病、褐根病为害最大。根据1975年根病普查,红根病占根病的29.42%,褐根病占18.4%。过去处理根病方法是:“挖、追、砍、晒、管”。花工多,难度大。因此,急需筛选防治橡胶根病的新农药。1977年6月在华南热作研究院的指导下,在南林等农场用十二吗啉、十三吗啉进行橡胶红根病、褐根病防治试验,效果较好,既起保护作用,也有治疗效果。在这基础上,1978年至1980年又在南林、东和、黄岭等九个农场扩大生产性试验。现总结如下: At present, there are six root diseases of rubber trees in Hainan Reclamation Area, of which the root cause is the root cause of red root disease and the brown root disease. According to the root cause survey in 1975, red root disease accounted for 29.42% of root diseases and brown root diseases accounted for 18.4%. In the past to deal with the root cause is: “digging, chasing, chopping, drying, tube.” More flowers, difficult. Therefore, there is an urgent need to screen new pesticides to prevent and cure rubber root diseases. In June 1977 under the guidance of the South China Research Institute of hot work, in the South Lin and other farms with twelve morpholine, tridemorph morpholine Rhodotorula, prevention and treatment of brown root disease, the effect is better, both from the protective effect, There are also therapeutic effects. On this basis, from 1978 to 1980, nine more farms in Nanlin, Donghe and Huangling were expanded. Now summarized as follows: