全氮、氨氮、全磷三种养分流失中全氮的流失最严重,侵蚀径流泥沙中养分元素均存在富集现象;
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稻田氮肥利用率低和大量的氮素损失在造成资源浪费、水稻生产成本增加、农民增产不增收的同时还导致一系列不良的环境反应。
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Nitrogen leaching of farmland is one of the important way of nitrogen loss.
农田氮素(N)淋失是N素损失的重要途径之一。
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本文对污泥堆肥化过程中,N素的转变与损失机理采用生化反应电子计量学进行了探讨,并且讨论了固定N源、降低N素损失、提高堆肥农用价值的方法。
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坡度是影响坡面水土流失和土壤养分流失过程的重要因素。
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坡度对坡面土壤矿质氮素水蚀流失负荷的影响
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Nitrogen Loss from Slope Cropland of Purple Soil under Different Fertilization
不同施肥制度下紫色土坡耕地氮素流失特征
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nitrogen loss from watersheds of interior alaska underlain with discontinuous permafrost
在位于不连续永久冻结带下面阿拉斯加内部水域氮损失
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This avoid ammonia nitrogen loss in the measurement and distillation steps.
避免了称量时易造成的样品损失及蒸馏过程的氨氮损失.
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自然降雨条件下香根草生物篱对菜地土壤地表径流和氮流失的影响
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Soil Nitrogen Loss in Runoff and Sediment as Affected by Level Trench and Crop Rotation
耕作及轮作对土壤氮素径流流失的影响
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Denitrification Loss and N_2O Emission from Nitrogen Fertilizer Applied to Vegetable Field
菜田氮素反硝化损失与N2O排放的定量评价
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from the absolute quantity, no matter in rice planting or not, the main loss of nitrogen was no3--n.
从绝对数量看,种植水稻与不种植水稻氮处理渗漏都以NO3--N为主。
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controlling effect to infiltrate loss of nitrogen by the nitrogen delayed-release materials
几种氮缓释材料对氮渗透损失控制的效果
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influence of irrigation mode on the loss of nitrogen and phosphorus in rice fields and environment
灌溉模式对稻田氮磷损失及环境影响研究展望
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application of chemical fertilizer and the loss of nitrogen and phosphorus in paddy soils in hunan
湖南省稻田化肥施用与氮磷流失状况的研究
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