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蔬菜重茬地由于多年的连作,导致土壤中病原菌和植物自身排泄的有害物质的大量积累,根结线虫大面积发
Vegetable stubble due to years of continuous cropping, leading to the soil pathogenic bacteria and plant excretion of a large number of harmful substances accumulation, root-knot nematode large area hair