Abstract: In order to realize the green control of cucumber root knot nematode and find the green and safe control measures,taking Dongfangxiu cucumber as the experimental material,the effects of five treatment methods on the agronomic traits,yield and root knot nematode disease control of cucumber plants were compared,including Verticillium chlamydosporium,welsh onion associated cultivation,Chinese medicine powder,No.1 bacterial fertilizer and regenerated root cultivation.The results showed that,in terms of agronomic traits,the plant growth of welsh onion associated cultivation treatment and No.1 bacterial fertilizer treatment was the best,followed by regenerated root cultivation treatment and traditional Chinese medicine powder treatment,and the growth of Verticillium chlamydosporiumtreatment was the worst;in terms of yield,the yield of regenerated root cultivation treatment was the highest,followed by No.1 bacterial fertilizer treatment,and the difference between the two treatments was not significant,but increased about 15%compared with the other three treatments.The results showed that the yield of CK,welsh onion associated cultivation and traditional Chinese medicine powder treatment were almost the same;from the disease occurrence degree of root knot nematode,welsh onion associated cultivation had the best control effect on root knot nematode,which was about 20% higher than the control effect of Verticillium chlamydosporiumtreatment commonly used in production.No.1 bacterial fertilizer treatment and regenerated root cultivation treatment were slightly better than the control of Verticillium chlamydosporium powder treatment was not as good as Verticillium chlamydosporiumtreatment.