Effects of residue placement and crop type on crop shoot (grains+leaves+stems) and root biomass C and N contents in the greenhouse.
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*Significant at P = 0.05.**Significant at P = 0.01.aNumbers followed by different letters within a column in a set are significantly different at P≤0.05 by the least square means test.bNon-measurable values due to negligible amount of root biomass.cCoefficient of variation.dNot significant.
创建时间：
2015-12-02
