1984—1985年,在病害常发区试验,以生产上的主要种植品系为材料,在自然发病条件下,人为地形成轻、中、重病,测定群体病情对产胶、产果量及死皮病的影响。试验结果表明,轻病于胶产量增产不显著,中病增产显著,重病显著减产。试验结果还表明,中病或重病对干胶含量、死皮病的发生和再生皮生长均无显著影响,但可导致种子严重失收。 From 1984 to 1985, in the disease endemic areas, the main planting strains in the production were used as material to form light, moderate and severe diseases artificially under natural disease conditions. The impact of disease. The test results show that the less serious increase in plastic yield was not significant, significant increase in disease, serious disease significantly reduced. The test results also showed that illness or serious illness on dry gum content, dead skin disease and regeneration of skin growth had no significant effect, but can lead to serious loss of seeds.