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di xia shui mai shen yu shui dao chan liang
Pages: 18-22+36
Year: Issue:  3
Journal: Reclaiming and Rice Cultivation

Keyword:  地下水埋深二氧化碳分压土壤水稻产量渗透性地下水位硝酸盐还原排水工程生长速率形成硫化物;
Abstract: <正> 在重质土稻区,由于土壤导水率低,渗透性差,如果排水工程不完善,在长期淹灌的条件下,必然引起地下水位升高,土壤渍水,造成土壤缺氧,导致二氧化碳分压升高,形成硫化物、低价铁、锰化合物,並使有机质还原,产生醇、醛类和甲烷,同时也会使硝酸盐还原为有害的亚
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