On sand the application of carborundum tube for the determination of decomposition rate of plant residues under field conditions
田间测定植物残体分解速率的砂滤管法
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%。
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