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. 2019 Nov 14;9:184. doi: 10.1186/s13568-019-0907-1

Table 1.

Experimental design and model formulations for cultivation materials

Formulation Substrate mixture ratio
X1 (%) X2 (%) X3 (%)
1 100 0 0
2 0 100 0
3 0 0 100
4 50 50 0
5 50 0 50
6 0 50 50
7 33.3 33.3 33.3
8 16.7 16.7 66.7
9 16.7 66.7 16.7
10 66.7 16.7 16.7

X1-wheat straw; X2-corn straw; X3-soybean straw