Applicationofarbuscular Mycorrhizal Fungi In Pesticide Tricyclazole Pollution Control

Nowadays, pesticide residue caused by imposing excessive pesticide residueshas become an important source of pollution in the agricultural nonpoint sourcepollution, Traditional chemical and physics means were not efficient for theremoval of pesticide residue contamination. Being a safe and no twice pollutionways, bioremediatio has been paid more attention gradually. Mycorrhizaltechnology is a hot topic of current research. Mycorrhizal technology can reduce theamount of pesticides and promoting the degradation of pesticide residues.Thereduction of pesticides was achieved by promoting plant resistance to reduce thedisease rate, and promoting the degradation of pesticide was achieved by promotingthe digestion. This paper studied the use of AMF in controling the pesticidepollution by set a example of rice fungicide tricyclazole.Experiments selected GM and GI, which were superior and eurytopic AMF.Study these two bacteria and two bacterial mixture on rice disease resistance andimprove effect on rice plant and soil of Tricyclazole residue and degradation effect.The results showed that artificial inoculation can significantly(p<0.01) improve theinfection role of AMF to rice, GM+GI has the best infection. Artificially imposetheagents can significantly improve the mycorrhizal dependency(p<0.05). AMF canincrease the plant height and can significantly increase the rice biomass. Thepromote of AMF on athboveground biomass of rice is more obvious. The scab ofrice which were inoculated were lower than those without inoculation.. Comparingwith traditional pesticide, AMF has a substitution effect of73.5%,67.6%,71.4%ofGM, GI, GM+GI as a biopesticideThe degradation effect in soil of tricyclazole of three agents were GM+GI>GM> GI from high to small. The half-lives of Tricyclazole were smaller than theblank without fungi under the application of fungi.The degradation effect in plantof tricyclazole of three agents were GM+GI> GM> GI from high to small. Thehalf-lives of Tricyclazole were smaller than the blank without fungi under theapplication of fungi.The soil mycorrhiza effect rule was that mycorrhizal effects were low at the lowconcentration of pesticide. In high concentration, mycorrhizal effect was enhancedbecause of the increasing of enzymes under the activation. GM’s mycorrhiza effectwas best in soil, and the maximum was31.67%. The law of mycorrhizal effect inrice plants was mycorrhizal effect reached the maximum value early, and then thiseffect reduced gradually as the time went on, and it tended to be stable finally. GM’s mycorrhizal effect was best in all rice plants.The maximum value was35.93%.GM can still play a good effect under the high concentrations of pesticides.The main conclusion was: GM has a higher infection rate and strongmycorrhizal dependence. GM has the most stable rice symbiotic relationship andhas the best rice disease resistance effect. GM has the best effect in reducing soil,plant pesticide residues. Therefore, GM is suitable for our province rice field whichcan instead of Tricyclazole in a certain extent as the biological pesticide.