1)  Nitrogenous fertilization technique
氮肥施用技术
2)  N fertilizer
氮肥
1.
The border effect and utilization rate of N fertilizer as base under wheat intercropped with spinach;
小麦间作菠菜的边际效应与基施氮肥利用率
2.
Four treatments were designed as the control (without urea incorporation); low N fertilizer level(0.
鉴于氮肥施用对农田CH4排放的影响还有很大不确定性,室外盆栽试验于2 0 0 2年在南京农业大学实施。
3.
In this paper,the concept related to ~(15)N application were introduced and interpreted,and the studies on N fertilizer research,N cycling and agricultural environment protection since 1980 were reviewed in detail.
本文介绍了15N的相关概念,列举了20世纪80年代以来15N在氮肥研究、氮素转化研究以及农业环境保护中的应用进展,阐明了应用15N的新技术已解决的问题,以及将要解决的问题,并展望了性核素示踪技术的应用前景。
3)  nitrogenous fertilizer
氮肥
1.
Global scope assessment of China's nitrogenous fertilizer industry;
对我国氮肥工业的全方位评价
2.
Interactive effects of super absorbent polymer and nitrogenous fertilizer;
土壤保水剂与氮肥的互作效应研究
3.
Competitive Strategic Analysis on China Nitrogenous Fertilizer Industry;
中国氮肥行业市场竞争战略分析
4)  N-fertilizer
氮肥
1.
Effect of N-fertilizer Levels on Physiobiochemistry in the Middle and Late Growth Stage of Super Hybrid Rice Ⅱ Youhang 1;
氮肥水平对超级稻Ⅱ优航1号生长中后期生理生化特性的影响
2.
Effect of Application Level of N-fertilizer on Nutritional Values of Corn Stalks;
氮肥追施量对玉米秸秆营养价值的影响
3.
Effect of N-fertilizer Application Patterns on Yield and N-fertilizer Efficiency of Corn;
氮肥施用方式对玉米产量和肥效的影响
5)  Nitrogen
氮肥
1.
Study on the Effects of Nitrogen Application and Planting Density on the Yield of Jingdan 28;
不同氮肥和密度水平对京单28产量效应的研究
2.
Effects of interaction of photoperiod and nitrogen on activities of enzymes of carbon and nitrogen metabolism of Huanong No.1 ensilage corn;
光周期与氮肥互作对华农1号青饲玉米碳氮代谢相关酶的影响
3.
The Effect of Nitrogen on Nitrate Leaching and Absorption under Spring Corn in Dry Arears of North China;
北方旱作条件下玉米施用氮肥对氮吸收和淋溶的影响
6)  Nitrogen fertilizer
氮肥
1.
Influence of herbicides on denitrification loss of nitrogen fertilizer and emission of N_2O.;
除草剂对氮肥反硝化损失与N_2O排放的影响
2.
Study on the residual effect of nitrogen fertilizer in spring wheat cultivation in semiarid areas;
半干旱地区春小麦氮肥后效的研究
3.
Effects of combined application of organic and inorganic nitrogen fertilizer on the soil nitrogn leaching and the growth of leaf-used lettuce;
有机无机氮肥配施对土壤氮淋失及油麦菜生长的影响
参考词条
补充资料:氮肥施用“九不宜”
    一是铵态氮肥不宜与碱性肥料混用。因为混施后会产生氨气,降低肥料效果。常用的铵态氮肥有碳铵、硫酸铵等,碱性肥料有草木灰、石灰等。
    二是硝态氮肥不宜与有机肥混用。有机肥含有较多有机物,遇到硝态氮肥会在反硝化细菌的作用下发生硝化反应,损失氮素。常用的硝态氮肥有硝酸铵、硝酸钠、硝酸铵钙等。
    三是硝态氮肥不宜在田中施用。硝态氮肥在厌氧条件下,易被反硝化细菌分解造成氮素损失,降低肥效。旱地应禁止在大雨前后施用或施用后浇大水。
    四是尿素不宜浇施。因为施入土壤后,尿素经过土壤微生物的作用,会水解成碳酸氢铵,然后分解出氨而挥发。
    五是尿素不宜紧贴种子。尿素含有少量缩二脲,会影响种子发芽,浓度过高时会使种子中毒。用尿素作种肥时,不要直接接触种子或控制尿素施用量。
    六是尿素作根外追肥浓度不宜过高。用作叶面肥,尿素效果确实好,但不能盲目加大用量。
    七是碳酸氢铵不宜施在土表太久。忌浅施,碳酸氢铵的性质不稳定,施后应立即覆盖。
    八是硫酸铵不宜长期施用。硫酸铵属于酸性肥料,长期施用会增加土壤酸性,破坏土壤结构。施用在碱性土壤上,硫酸根离子会与钙离子作用使土壤板结。因此,要与其他氮肥交替使用。
    九是不宜施在忌氮作物上。如施用在忌氮作物上会使作物生理机能遭到破坏,严重时会使作物死亡。(来源:《中国花卉报》2004.01.06)
说明:补充资料仅用于学习参考,请勿用于其它任何用途。