• This paper reports the effect of DCD in seedling stage to soil microorganism of bacteria, mold and actinomycetes, and the concentration changes of both ammonium nitrogen and nitrate nitrogen in soil.

    实验研究了双氰胺玉米苗期土壤微生物细菌霉菌放线菌影响对土壤铵态硝态氮贮量变化影响。

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  • Even nitrogen, which is a gas in its elemental state, is normally absorbed from the soil as nitrate ions.

    即使是元素状态气体通常作为硝酸根离子土壤中被吸收

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  • Applying more nitrogen would increase the content of soil microbial biomass nitrogen, but might result in large amount of nitrate residue in soil and suspected to leaching loss.

    继续增加施量,土壤微生物量氮含量增加土壤中残留大量硝态氮易淋溶损失

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  • No matter what the soil moisture treated, being with waterlog in normal paddy or upland condition in GCRPS field, once nitrate as nitrogen fertilizer source. N2O emission increased remarkably.

    不论是旱种还是水田,只要增加硝态土壤n2o排放极显著增加。

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  • With the same irrigation amount, the increasing of nitrate nitrogen content both in the soil and groundwater has the polynomial correlation with groundwater table.

    水量相同时土壤增加量地下水中硝态氮增量地下水埋深成多项式关系

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  • An experiment in field and artificial penetration-filter pond test both were conducted to show factors affecting content of nitrate-nitrogen in soil in the present study.

    采用田间试验人工滤池试验方法,研究土壤硝态氮含量影响因素

    youdao

  • Effects of applying different nitrogen fertilizer on yield, quality and nitrate leaching in soil layer were studied during the cucumber growth period in greenhouse.

    不同措施条件下,对保护地黄瓜生育期内氮素吸收利用效率、氮素淋洗损失进行了研究,同时也研究了不同处理对黄瓜产量品质影响

    youdao

  • Effects of applying different nitrogen fertilizer on yield, quality and nitrate leaching in soil layer were studied during the cucumber growth period in greenhouse.

    不同措施条件下,对保护地黄瓜生育期内氮素吸收利用效率、氮素淋洗损失进行了研究,同时也研究了不同处理对黄瓜产量品质影响

    youdao

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