树木生长在有限的盆土中,抗病虫害的能力一般比地栽的同种植物要低,一旦发生病虫害,轻者造成树木生长发育不良,严重时可造成部分枝叶或整株死亡。因此,对病虫害应采取“预防为主”的方针,一旦发生病虫害,应以“治早、治小、治了”的原则根治,不使其蔓延。 Tree growth in limited pot soil, the ability of pests and diseases are generally lower than the same planted plants, in the event of pests and diseases, the light caused by poor growth and development of trees, in severe cases can cause some branches or whole plant death. Therefore, the principle of “prevention first” should be taken for pests and diseases. Once pests and diseases occur, the principle of “cure early, cure small and cure” should be taken root and not allowed to spread.