The residual ratios of root materials of different crops measur-ed by carborundum tube method were 30%, 26%, 33% and 41% for corn, sorghum, soy bean and millet respectively.

  • 用砂滤管测定根茬腐解残留率玉米、高粱、大豆及谷子分别为30%、26%、33%和41%。

  • 互联网摘选 2025-01-20 12:41:41

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