Figure 1.
Contents of soluble sugar, MDA and chlorophyll in T. repens, M. sativa and F. arundinacea under orthogonal designed experiment.
Note: (A) soluble sugar, (B) MDA and (C) chlorophyll.
Table 1.
The variance analysis of the soluble sugar, MDA and chlorophyll content of the target plants under different treatments of nitrogen and pH.
Figure 2.
Effects of aquatic lixivium of different concentrations of chicory root and leaf extracts on the germination potential, germination rate, and radicle and hypocotyl length of T. repens under varying nitrogen and pH treatments.
Figure 3.
Effects of aquatic lixivium of different concentrations of chicory root and leaf extracts on germination potential, germination rate, and radicle and hypocotyl length of M. sativa under varying nitrogen and pH treatments.
Figure 4.
Effects of aquatic lixivium of different concentrations of chicory root and leaf extracts on the germination potential, germination rate, and radicle and hypocotyl length of F. arundinacea under varying nitrogen and pH treatments.
Figure 5.
Nitrogen and pH equivalent coupling effects of models for the effects of aquatic lixivium of chicory root on the radicle and hypocotyl length of the three plants.
Table 2.
Orthogonal matrix of the experimental design L9(34).
Figure 6.
Nitrogen and pH equivalent coupling effects of models for the effects of aquatic lixivium of chicory leaf on the radicle and hypocotyl length of the three plants.
Figure 7.
Nitrogen and pH equivalent coupling effects of models for the coupling effects in terms of the MDA content in the target plants.
Figure 8.
Response surface and contour chart for the coupling effects of nitrogen and pH on soluble sugar content in the target plants.
Figure 9.
Response surface and contour chart for the coupling effects of nitrogen and pH on chlorophyll in content the target plants.
Figure 10.
Distribution surface of nitrogen and pH for the effects on the seedling growth, soluble sugar, MDA and chlorophyll in the target plants.
Table 3.
Design for the orthogonal L9 (34) test.