The experiment assumed two kinds of the rice soil of different fertility level.

试验是采用肥力水平不同的两种水稻土进行。

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The organic combination state in selenium-rich red earth and that in rice soil are the main combination patterns.

富硒红壤和富硒水稻土中的有机结合态硒是土壤中的主要结合态。

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The results showed that the degradation rate of mineral oil was promoted by fertilization in alfalfa soil, but not in paddy rice soil.

结果表明，投肥对苜蓿草土壤中矿物油降解有促进作用，但对水稻土壤中矿物油降解无明显作用。

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According to soil scientist Roland Buresh at the International Rice Research Institute.

VOA: standard.2010.07.28

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There he found one of the poorest populations on earth, and an environment quickly degrading as hungry farmers tried desperately to cultivate rice in the eroding soil.

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For cadmium to be evident in rice grains as well, the soil in which it was grown must have been especially highly polluted, said Jonathan Wong, a Hong Kong biology professor who has studied mainland soil pollution extensively.

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