设施蔬菜由于连作和重茬种植,为根结线虫提供了必要的营养和生存条件,随着种植年限增加,蔬菜根结线虫病对蔬菜生产的危害也日趋严重。根结线虫的寄主范围很广,除葱、蒜目前尚未发现被侵染外,其余几乎所有蔬菜都已受到危害,特别是瓜类、茄果类和豆类等蔬菜受到的危害最重。同时,由于根结线虫病的发生还使一些真菌性和细菌性病害危害加重,腐霉菌、镰刀菌和丝核菌等真菌在根结中生长繁殖比在根的其他部位快得多,增加了植株的感病性。因此,设施 Due to the continuous cropping and stubble planting, the vegetable provided the necessary nutrition and survival conditions for the root knot nematode. With the increase of planting years, the vegetable root knot nematode caused by vegetable root knot nematode is more and more harmful to the vegetable production. Root knot nematode host a wide range, with the exception of onions, garlic has not yet been found infected, the remaining almost all vegetables have been harmed, especially melons, solanaceous vegetables and legumes and other vegetables suffered the most. At the same time, due to the occurrence of root knot nematodes also make some fungal and bacterial diseases worse, fungi such as Pythium, Fusarium and Rhizoctonia in the root knot growth and reproduction than in other parts of the root much faster, increased Plant susceptibility. Therefore, facilities