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straw mulch | |||
saprophile | |||
humics | |||
humic degradation matter | |||
mouldy substance | |||
humus The more or less decomposed organic matter in the soil. Besides being the source of most of the mineral salts needed by plants, humus improves the texture of the soil and holds water, so reducing the loss of nutrients by leaching (在土壤中或多或少不同程度分解的有机物质。除了可作为植物所需的主要矿物盐类来源,腐植土亦可改善土壤的组织和保住水,进而降低营养物因渗滤作用的流失。) | |||
humus | |||
humic substance | |||
humic compound; humic matter; sapropel (淤泥); humic substances | |||
humic material | |||
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mull | |||
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humic substance | |||
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humus | |||
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humus | |||
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lignohumic |
腐殖 质 : 327 phrases in 15 subjects |