Effect Of Different Seed Coating Agents On Soil Enzyme Activity And Physiological Characteristics Of Maize Rhizosphere

A pot experiment was conducted on corn seed dressing, set CT, CIT than1:20,1:30,1:40three concentrations of drug types and a total of seven CK treatment,discusses the corn hybrids HKUST16emergence, the difference in the quality ofseedling seed treatment. Combined with field experiments to explore the Seed treatedwith different concentrations of HKUST16at the seedling stage, jointing stage, largebell, flowering, during the filling stage and physiological characteristics of maturerhizosphere soil enzyme activity and production, revealed in Seed variation ofphysiological and biochemical mechanisms of maize, the main conclusions are asfollows:Firstly, different seed coating decreased the germination potential, germinationrate, germination index, the greater the impact on the greater concentration Seed budpotential. Seed greater impact on the growth of maize, maize seedling height, rootlength, fresh weight, leaf area have increased, little change in the degree of dry weight.Secondly, seed after CT, after treatment with different concentrations CIT, theeffects of different physiological indexes of maize seed coating larger each treatmentchlorophyll, soluble protein, proline content decreased compared with CK, thedifference was significant, decline and Pharmacy concentrations were positivelycorrelated, and each treatment compared with CK, soluble sugar increasedsignificantly different.Thirdly, seedling plants in vivo by measuring SOD, POD, CAT activity and MDAcontent in order to determine the physiological resilience seed. The results showed that:Seed treated with different concentrations of different seedling POD, SOD, CATactivity increased, the magnitude of increased activity associated with the drugconcentration. Each treatment compared with CK seedling MDA levels increased significantly different, with a significant correlation between the concentration of seedcoating.Fourthly, at the seedling stage CT and CIT Seed treatments with concentration,urease, protease, dehydrogenase activity was inhibited effect is stronger, CT and CITin various concentrations over the next rhizosphere soil urease enzyme, proteaseactivity strong inhibitory effect, inhibition on dehydrogenase CIT process is stronger.Advancing with the growth in the jointing stage, large bell, although thepharmaceutical processing flowering urease, protease, dehydrogenase activity wasinhibited, but its intensity and drug concentration inhibiting the size of no relevance. Inthe filling stage, mature CT and CIT various concentrations were restored to CK levels.Fifthly, from seedling to flowering, various concentrations of CT and CIT dealwith alkaline phosphatase, invertase, catalase activity showed a significant role inpromoting, but its concentration gradient is no positive correlation, CT and CITvarious concentrations treatment difference was not statistically significant compared.Filling stage, mature at different concentrations CT and CIT treatment on alkalinephosphatase activity is inhibited, while invertase, catalase activity is not significantlyaffected. Throughout the growth period CT and CIT two kinds of seed coating effectson rhizosphere alkaline phosphatase is active-recovery-after suppression, and seedcoating concentration is not related; CT and CIT soil invertase, catalase activity ofactivated role only in the seedling stage, flowering on the activation of catalasepositive correlation with seed coating concentration in the large bell, flowering Seedlower concentrations of soil invertase, catalase activity activation strong.Last, CT and CIT each treatment in the early growth stage for corn rhizospheresoil enzyme activity caused a certain extent, was not conducive to the normal growthof early, but significantly reduced the plant pest infestation rate, so that the healthygrowth of corn plants, thus contributing to the production enhance the three elements,and ultimately improve the yield. In production, Seed dressing can meet therequirements of high-yield grain production, seed coating concentration chosen toCIT2and CT2appropriate.