Study On Compound Matrix And Seed Biofiltration In Vegetable Seedling

1.Cucumber nursery compound matrix combination test.The results showed that the bulk density of A2 substrate was small,the permeability was good,and the emergence rate was the highest.From the morphological indicators,the plant height of C2 is the largest,the plant height of A3 is the smallest,the difference between C2 and C4 is not significant;the stem thickness of B5 is the largest,and the difference is not significant from C4;the number of leaves of B3,B4,B5 is the most,and the leaves of B5 The area is the largest and the difference from other treatments is significant;the fresh weight of above-ground and below-ground of C4 is the largest,and the smallest of A3;the dry weight of above-ground of B4 is the largest,and there is no significant difference from B3,B5,C4,the dry weight of below-ground of C4 is the largest,Other treatments are significantly different.From the perspective of root index,C4 has the largest root vitality,root volume,and root-to-root ratio,and A3 has the smallest index.From the comprehensive index,C4 has the strongest seedling index and G value,which is the most suitable substrate for cucumber seedlings,followed by B4 treatment.The seedling growth index and G value of A3 are the smallest,which is not suitable as a substrate for cucumber seedlings.The combination of C4 is 1/2 Mengda+1/2 Woxing+Green Long,the combination of B4 is Evergreen+Green Long,and the combination of A3 is strong peat.2.Compound substrate combination test of tomato seedlings.The results showed that the germination rate of A3 was the highest,but the difference from B5 was not significant.The physical properties of B5's substrate met the standard of suitable physical properties of seedling substrate.In terms of morphological indicators,C4 has the largest stem thickness,but is not significantly different from B5;plant height,number of leaves,maximum leaf area,and dry and fresh weight of plants are all treated with B5 and have the best growth morphology.From the root index,B5 has the largest root volume and no significant difference from A5;B1 and B5 have the highest root vitality and no significant difference between treatments;B3 has the largest root-to-root ratio and no significant difference from B1.From the comprehensive index,B5 has the strongest seedling index and G value,which is suitable for tomato seedlings.The seedling growth index and G value of A3 are the smallest,followed by A1,which is not suitable for tomato seedlings.The combination of B5 is Woxing+Lvlong,the combination of A3 is strong peat,and the combination of A1 is Mengda.3.Biological disinfection technology of cucumber seeds.The results showed that the germination rate,germination potential,germination index,and vitality index of ethanol were the lowest;the germination rate of propylene garlic was the best,and it was not significantly different from that of ethyl garlic and water garlic;the germination potential and germination index of water CK was the largest;the vigor index is the largest,and the difference with water CK is not significant,and the seed vigor is the strongest.In the PDA medium,the cucumber seeds after the disinfection of tobacco extracts were all contaminated.The cucumber seeds after the disinfection of garlic extracts had the best disinfection effect.In the LB medium,the cucumber seeds after disinfection of tobacco extracts were all contaminated,and the cucumber seeds after disinfection of garlic extracts had the best disinfection effect.The cucumber seeds sterilized by garlic extract have better inhibitory or killing fungi than bacteria.4.Biological disinfection technology of tomato seeds.The results showed that the best germination rate was water garlic,which was not significantly different from water CK,water root,and water stem;the best germination potential was water CK,which was not significantly different from water stem and water garlic;the highest germination index was water stem,and Other treatments have significant differences;the water stem vigour index is the highest,and the water CK and water stems are not significantly different,and the seed vigour is the strongest.In the PDA medium,the tomato seeds after disinfection of tobacco extracts were all contaminated,and the tomato seeds after disinfection of garlic extracts had the best disinfection effect.In the LB medium,all treated tomato seeds were contaminated.Tomato seeds sterilized by garlic extract have better inhibitory or killing fungi than bacteria.