蔬菜根结线虫已成为内蒙古赤峰市设施蔬菜园区的主要病害，对黄瓜和番茄造成严重的产量损失，为了筛选高效、安全的生物杀菌剂，2011－2012年在赤峰市松山区设施蔬菜园区进行了5种不同生物杀菌剂对设施黄瓜和番茄根结线虫防治的田间试验，在黄瓜和番茄定植时用100亿 cfu／g 厚孢轮枝菌粉剂0．2 kg／667 m2撒施，2％阿维菌素＋多聚糖乳油3000倍稀释液灌根处理，0．2亿 cfu／g 淡紫拟青霉颗粒剂5 kg／667 m2撒施，10亿 cfu／mL 蜡质芽胞杆菌水剂6 L／667 m2灌根，1．8％阿维菌素乳油500倍稀释液灌根，设4次重复，并设空白对照。定植20 d 后再用同样的浓度和方法处理一次，结果表明：5种生物杀菌剂对黄瓜和番茄根结线虫的防治效果为20％～60％，10亿cfu／mL 蜡质芽胞杆菌水剂效果最好，达到56．3％，同时可以提高黄瓜和番茄的商品性，适于在设施蔬菜上推广使用。%Root-knot nematode has become the major threat for greenhouse vegetable production in Chifeng City of Inner Mongolia,and caused serious yield losses on cucumber and tomato.The field experiment was conducted to determine the effect of five biological agents against cucumber and tomato root-knot nematodes in greenhouse during 2011-2012.10 billions/g Verticillium chlamydosporium DP (0.2 kg/667 m2 )and 0.02 billions/g Paecilo-myces lilacinus GR (5 kg/667 m2 )were manually applied,and 2% abamectin+polysaccharide EC (3 000×),1 billion cfu/mL Bacillus cereus AS (6 L/667 m2 )and 1.8% abamectin EC (500×)were applied by drenching at the stage that the cucumber seedlings were transplanted into greenhouse.All the bioagents were reapplied once 20 days after the transplantation.Each treatment had 4 replicates,and the cucumber and tomato seedlings treated with water were used as the control.The results showed that all these bioagents could increase the cucumber and tomato production and effectively control the cucumber and tomato root-knot nematodes under the greenhouse conditions.Among them,1 billion cfu/mL B.cereus AS was the best one with control efficiency up to 56.3%.
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