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- Results showed that increasing nitrogen application rate increased total N uptake,but decreased the percentage of nitrogen exported(PNE)from vegetative organs,nitrogen harvest index(NHI)and nitrogen efficiency for grain production(NEGP). 结果表明 ,施氮量增加 ,水稻吸氮量增多 ,但营养器官的氮转运率、氮收获指数和产谷效率显著下降 ;
- Total N uptake 吸氮量
- Yield and N uptake response by non-nodulated soybean to increased P availability is marginal. 不结瘤大豆对有效磷增加在产量和氮吸收上的反应也不大。
- In the total N absorbed by crops 33.9% was absorbed by wheat and 66.1% by corn. 带田适宜施氮量为385.;5 kg hm-2:在作物总吸收N量中;被小麦吸收的氮占33
- Silicon application promote N uptake by plant, while increasing N application could increase Si uptake by plant but Si addition probably inhibit K uptake. 施硅促进植株吸氮，而提高吸氮量可以提高植株吸硅量，但施硅可能抑制吸钾。
- The total N, NAN and microbial N passing the abomasum had increasing trend. 试验期1昼夜通过皱胃的总氮量为14.;27克;非氨氮(NAN)13
- Figure1 exhibits that there are two peak period of N uptake by both of traditional and modified nitrogen application methods. 从图1看出传统施氮方法和改良方法都有两个吸氮高峰期。
- There were positive correlation between SOC and total N, available N and C:N. 苜蓿草地有机碳与全氮、碱解氮及C:N之间均为正相关关系。
- The difference of N uptake efficiency was the main fact that resulted in the N use efficiency among tea plant genotypes. 氮素效率的两个子性状一吸收效率和生理利用效率对其贡献大小不同，吸收效率是决定不同品种茶树氮素效率差异的主要因素。
- Singleton and Tavares unpubished data. * N available from the soil setimated by N uptake by ineffectively nodulated plants (strain SM-5). Singleton和Tavares未发表数据。* 来自土壤的有效氮通过非有效结瘤菌株(SM-5)对N的吸收来估算。
- Qin Y Q, Li C J, Zhao Z X, Wu X P, Zhang F S.Effects of rates and methods of N application on growth and N uptake of flue-cured tobacco. 秦艳青;李春俭;赵正雄;武雪萍;张福锁.;不同供氮方式和施氮量对烤烟生长和氮素吸收的影响
- Crop yield was remarkably increased under NP or NPK fertilization,but N surplus still remain at a lower level even though N uptake improved. 硝态氮累积量高且大部分集中在根区外土壤,硝态氮淋失风险大。
- Nitrogen management of legumes can be more complicated than for cereals since two alternative sources of N can be tapped to meet N uptake requirements. 在氮肥的管理上，豆类比谷类要复杂，它可利用两种氮源以满足氮素的需要。
- Soybean genotype with a shallower root system was advantageous not only for soil P uptake but also for N uptake by both crops. 浅根型大豆品种不仅有利于两种间作作物对土壤磷的吸收，同时还有利于对氮的吸收。
- Compared with the combination of N and P,the N uptake increase 18.2 kg/ha,P uptake increase 4.1 kg/ha,K uptake increase 8.3 kg/ha when applying the combination of N,P and manure. 氮、磷和有机肥处理的小麦吸氮量比氮磷处理增加18.;2 kg/ha;吸磷量增加4
- One of those ways, associated with higher crop yields, is to be sure that limitations of some other nutrient do not detrimentally affect N uptake and use. 其中一个与高产有关的方法是保证一些其它养分的限制不对氮的吸收利用造成有害影响。
- Jiao X G, Liang W J, Chen L J, Jiang Y, Wen D Z.Effects of urease/nitrification inhibitors on soil available N and microbial biomass N and on N uptake of wheat. 焦晓光;梁文举;陈利军;姜勇;闻大中.;脲酶/硝化抑制剂对土壤有效态氮、微生物量氮和小麦氮吸收的影响
- The total N 2O emission from forest ecosystem may be underestimated if plants can emit N 2O under natural condition. 如果树木在自然状态下能排放N2 O ,那么森林生态系统的N2 O排放可能被低估。
- The content of total N and total P in rainfall could be increased by Pinus tabulaeformis and Rhus typhina. 油松、火炬能够增加降雨中总氮、总磷的含量。
- The highest ratio of the fertilizer N to total N in plant was found in rosette stage, and then it declined slowly. 同时，施氮量越多，各个时期各部位和整株中肥料氮的比例越大，且均在团棵期达到最大值；
