1)  ratios of base and topdressing nitrogen fertilizer
氮肥基追比
1.
Pot experiment using equal amounts of nitrogen in different ratios of base and topdressing nitrogen fertilizer i.
在盆栽条件下,研究了3种氮肥基追比(2∶1、1∶1和1∶2)对抗虫杂交棉‘豫杂35’的叶片衰老特性和产量的影响。
2)  Ratio of base N to dress N
氮肥基/追比
3)  Ratio of base / topdressing fertilizer
氮肥基追比例
4)  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。
5)  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
6)  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
参考词条
补充资料:5-乙基-5-(1-甲丁基)-2-硫代巴比土酸钠
分子式:
分子量:
CAS号:

性状:淡黄色粉末,有吸湿性和不愉快气味。
溶解情况:易溶于水,溶于乙醇。
用途:超短时作用的巴比妥类药物。供静脉注射的全身麻醉药;也可用于抗惊厥。
制备或来源:用乙基丙二酸酯与硫脲缩合,然后酸化得硫喷妥,再与乙醇钠作用制得。
备注:性质不稳定。水溶液放置时分解。干粉密封于安培瓶中,临用前配制溶液。


说明:补充资料仅用于学习参考,请勿用于其它任何用途。