This study was conducted to investigate the effect of the water - soluble organic matter (WSOM) extracted from peat and rice straw on the growth and the element uptake of rice by water culture.

水培实验研究了由泥炭和稻草提取的两种水溶性有机物（WSOM）对水稻幼苗生长、光合特性及元素吸收的影响。

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As soil water extract contains much water-soluble organic selenium and organic matter, the determination of soil water-soluble selenium should be concentrated and digested beforehand.

由于水溶性有机态硒及有机质的存在，准确测定土壤水溶性硒宜经浓缩、消化处理后进行。

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It enhances the content of water soluble organic matter greatly.

冻融交替明显增加土壤中水溶性有机质的含量。

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