The Effect of Biomass Ash Soil Conditioner on Prevention and Control of Tobacco Bacterial Wilt
A field plot experiment is carried out in order to investigate the prevention and control effect of biomass ash soil conditioner combined with microbial agent on tobacco bacterial wilt.The experiment uses the treatment without soil conditioner and microbial agent as the control,and the application amount of soil conditioner is set at three levels,150,200 and 300 kg/mu(1 mu = 667 m2).The soil physical and chemical properties,tobacco agronomic properties,incidence rate of tobacco bacterial wilt and other indicators of different treatments are measured accordingly.The results show that the treatment of 300 kg/mu of biomass ash soil conditioner has the best effect,soil pH increases from 5.30 before treatment to 6.30 after treatment.Furthermore,the plant height,effective leaf number,average leaf area and leaf area coefficient of tobacco in different growth stages are all better than that of other treatments,and the incidence rate of bacterial wilt decreases to 7.4%comparing with 45.6%from the control treatment.The application of biomass ash soil conditioner combined with microbial agent can reduce the incidence rate of bacterial wilt and promote the growth of tobacco plants.
tobaccosoil conditionerbiomass ashbacterial wiltprevention and control effect
NETL
NSTL
万方数据
