摘要
为了探明B96-Ⅱ发酵液对辣椒病害的防治效果，进行了B96-Ⅱ发酵液对辣椒病害的防治及对植物促生效果的室内和田间试验。平皿试验结果表明，B96-Ⅱ发酵液（10^10-10^11cfu／mL）对辣椒枯萎病菌、辣椒疫病菌、辣椒黑斑病菌有明显的抑制作用，在稀释100倍以上浓度（〉10^8-10^9cfu／mL），对3种病菌的生长完全抑制；在稀释10^2-10^8倍（10^2-10^8cfu／mL）时，对辣椒枯萎病菌生长速率抑制率为62．71％～93．22％，对辣椒疫病菌抑制率为71．07％-92．56％，对辣椒黑斑病菌的抑制率为91．74％～97．52％。田间试验结果表明，B96-Ⅱ发酵液（500倍）间隔30d进行2次灌根后，35d的防治效果为80．3％，复方多菌灵为37．9％，70d后B96-Ⅱ发酵液的防治效果仍为78．3％，而复方多菌灵仅为8．4％；B96-Ⅱ对辣椒植株有明显促生作用，与对照相比，植株高度提高16．1％，鲜质量提高33．5％，结实率提高23．8％，果实质量增加38．8％。
Fermentation liquid （10^10-10^11 cfu/mL） of an antagonist strain B96- Ⅱ could effectively inhibit mycelia growth of Fusarium oxysporum f. sp. vasinfectum, Phytophthora capsici, and Alternaria alternata in a confrontation test in petri dishes. A Whole inhibition of the mycelia growth had been observed by the concentration of 〉 10^8 - 10^9 cfu/mL. In a concentration ranged 10^2-10^8 cfu/mL, the inhibition rate to mycelia growth of Eoxysporum f.sp.vasinfectum reached to 62.71% - 93.22%, and for P.capsici 71.07% - 92.56% and for A.alte rnata 91.74% - 97.52% respectively. Field trials revealed that root drenching with fermentation liquid （500 times dilution, two times in 30 days ） got a protective efficacy of 80.3% at 35 d, while that treated with carbendazim mixture only 37.9%. At 70 d after treatment, the efficacy kept by 78.3% for B96- Ⅱ , and 8.4% for carbendazim mixture. The strain B96- Ⅱ demonstrated a significant growth promoting effect to chili pepper plant. Compared with untreated plot, B96- Ⅱ could increase plant height up to 16.1%, fresh weight 33.5%, fruiting rate 23.8%, and the pepper fruit weight increases 38.8%.
出处
《山西农业科学》
2013年第10期1108-1111,共4页
Journal of Shanxi Agricultural Sciences
基金
山西省科技攻关项目(20110311023-1)
关键词
生物农药
土传病害
辣椒枯萎病
辣椒疫病
辣椒黑斑病
促生作用
biopesticide
soil born disease
chili fusarium wilt
chili pepper blight
chili leaf spot
growth promoting
