1)nitrogen loss氮素损失
1.The nitrogen losses in the intensive agricultural areas around the Dianchi Lake are an important factor for non-point source pollution and eutrophication of the lake.基于滇池流域集约化农田区产业结构特征、施肥方式、土壤物化性质分析,利用现场模拟试验,探讨水土生复合系统中氮素输移、分布和损失机制,量化不同情景下氮素损失量。
2.The amounts of nitrogen loss were different under differe.不同调理剂及操作条件对氮素损失影响较大 ,利用腐熟堆肥作为调理剂可以减少氮素损失。
3.Experiments with indoor incubation and outdoors pilot composting were carried out to investigate effects of chemical amendments on odor reduction and inhibitor of nitrogen losses during composting pig manure.通过室内培养与室外堆肥试验，研究了添加调理剂对猪粪发酵过程中臭味及氮素损失的影响。
英文短句/例句
1.Studies on the Nitrogen Transform and Reducing Nitrogen Loss during Composting;堆肥氮素转化及原位减少氮素损失的研究
2.Effect of Different Recycle Ratios of Dried Sludge on Nitrogen Loss During Sludge Composting不同干污泥返料量对污泥堆肥氮素损失的影响
3.REVIEW OF RESEARCH STATUS,PROSPECTS AND MECHANISM OF LOSSES OF NITROGENOUS COMPOUNDS FROM ABOVE-GROUND PLANT PARTS植物地上部氮素损失及其机理研究现状与展望
4.Effects of Phosphorous and Straw Covering on Nitrogen Uptake of Vegetable and Nitrogen Losses from Vegetable Garden Soil施磷和秸秆覆盖对蔬菜氮吸收及蔬菜地氮素损失的影响
5.Study on Mechanism of Situ-control on the Nitrogen Loss during Aerobic Composting;好氧堆肥化过程中氮素损失的原位控制机制研究
6.Nitrogen Losses and Inoculation with Heterotrophic Nitrifier during the Compost of Livestock and Poultry Manure;畜禽粪便堆制过程中氮素损失及接种异养亚硝化细菌的初步研究
7.Changes of Nitrogen Loss and Ammonia Emission during Composting of Municipal Sludge and Their Control污泥堆肥过程中氮素损失和氨气释放的动态与调控
8.Effect of Mg(OH)_2 and H_3PO_4 Amendments on Nitrogen Conservation During Composting氢氧化镁和磷酸固定剂控制堆肥氮素损失的研究
9.Nitrogen Losses from Shoots of Different Rice Genotypes with Different Nitrogen Use Efficiency;不同氮效率水稻地上部氮素挥发损失的研究
10.Effect of DMPP on Inorganic Nitrogen Runoff Loss from Vegetable SoilDMPP对菜地土壤氮素径流损失的影响
11.Nitrous Oxide Losses of Nitrogen Fertilizer and Influential Factors on Loess Soil;黄土性土壤氮素氧化亚氮气态损失及其影响因素的研究
12.Study on Nitrogen Absorption and Volatilization Loss Characteristic of Cotton in Xinjiang新疆棉花植株氮素挥发损失及氮素吸收利用特征研究
13.Studies on Influence Factors of Nitrogen and Phosphorus Loss of Agricultural Non-point Source Pollution in Hunan Province湖南农业面源污染中氮、磷损失的影响因素研究
14.Research on the Loss of Nitrogen in Direct-seeding Rice Field in Taihu Lake Region太湖地区直播稻田氮素的渗漏损失研究
15.Nitrogen Utilize and Damnify as well as Optimized Management of Nitrogen Fertilizer Applied to Vegetable Field of Greenhouse in Taihu Lake Region;太湖地区大棚蔬菜地化肥氮利用和损失及氮素优化管理研究
16.Influencing Factors of Nitrogen Runoff Loss from Farmland Soil and Its Prevention Measures农田土壤氮素径流损失的影响因素及其防治措施研究
17.Nitrogen Transformation and Gas Losses in Soils Grown with Vegetables in Nanjing Suburb;南京郊区菜地上氮素的主要转化过程及其气态损失
18.Ammonia volatilization of N fertilizer and influencing factors in the North China Plain华北平原小麦季氮肥氨挥发损失及影响因素研究
相关短句/例句
Nitrogen losses氮素损失
1.Volatilization of nitrogenous compounds from above-ground plant parts is an important pathway for nitrogen losses and also an effective approach for increasing atmospheric NH3 and N2O.植物地上部气态氮化合物挥发是氮素损失的重要途径,同时也是大气NH3和N2O的重要来源,因此,研究植物氮素挥发损失对于大气环境保护和提高氮肥利用率具有重要意义。
3)N loss氮素损失
1.Nitrogen use efficiency and N losses from Chinese cabbage grown in an open field;露地种植大白菜的氮肥效应与氮素损失研究
4)nitrogen runoff loss氮素径流损失
1.Effect of controlled-release nitrogen fertilizer on reducing nitrogen runoff loss and increasing nitrogen recovery efficiency of rice plant;施用控释氮肥对减少稻田氮素径流损失和提高水稻氮素利用率的影响
5)Nitrogen loss from plant植株体氮素损失
6)Apparent loss of fertilizer N氮素损失途径
延伸阅读
土壤—植物系统中氮素的损失土壤—植物系统中氮素的损失nitrogen loss from soil-plant system 土城一植物系统中氮紊的损失(n itrogen1055 from 5011一plant system)氮素通过各种转化和移动过程而离开了土坡一植物系统。氮素损失直接减少了作物可以吸收的氮量，从而降低了施入氮肥的增产效果，并影响到环境的质量。因此，采用各种技术以减少氮素损失，特别是所施氮肥的损失.是农业氮素管理的中心任务之一。 摘失程度因土壤性质、作物种类、氮肥的种类和施用技术以及施肥前后的气象条件等而异。对中国农田生态系统的研究表明.化学氮肥氮的损失多在30%~7。%之间，有机肥料氮的损失一般明显低于化学氮肥氮的损失.在石灰性土壤上，化学氮肥氮损失量显著高于非石灰性土壤。化学氮肥氮在稻田中的损失量高于早作土壤，其中尤以硝酸态氮肥最为明显。但是，在石灰性土壤上，施于早作的硝酸态氮肥损失较按态氮肥低。 报失途径主要有反硝化、氨挥发、淋溶和径流损失等途径，它们之间有密切联系.各途径所损失的氮量在氮素总损失中所占的比例，受许多因素的影响.在多数情况下，反硝化和氨挥发是主要的损失途径。此外，植物体内的氨通过叶面直接逸向大气，也是氮素损失的一种途径，然而损失的氮量一般很少。 反硝化损失硝酸盐在嫌气条件下，被还原成氧化亚氮和分子态氮而引起的氮素损失。在非石灰性土壤上，反硝化是农田生态系统中氮素损失的重要途径.稻田中有多种机制可引起按的硝化一反硝化损失。在早作土壤中.短时间的通气不良或局部嫌气环境也可产生反硝化作用. 氮挥发损失氨自土表(早作)或水面(水田)逸散至大气所造成的氮素损失，当土表或田面水的氨分压大于其上大气的氨分压时，即可发生这一过程。氨挥发速率主要决定于土壤表层(早作)或田面水(水田)的pH值、温度，以及田面水中钱态氮的浓度、风速等。因此，凡能影响这些因子的因素，都将影响到氨挥发损失.如土壤的pH值、阳离子交换量、碳酸钙的含量、按态氮肥的相伴阴离子的种类、氮肥的施用技术、作物的生长情况以及气象条件等。此外，稻田的田面水中藻类白天营光合作用，可使水的pH值显著升高，从而促进氮的挥发.在有利于氛挥发的土壤和气象等条件下，氮挥发是氮素撅失的一个重要机制，在石灰性土壤上表施按态或产生按的氮肥易引起氨的挥发损失. 淋溶报失土壤中的氮(主要是硝酸态氮)随水向下移动至根系活动层以下而造成的氮素损失.通过淋溶而损失的氮量，决定于土壤中硝酸态氮的含t和土壤的渗漏水量。
