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- Applying N fertilizer during the R4 and R5 periods could increase the crop N-accumulation and yield significantly. 在 R4和 R5 期补充氮肥的供给明显增加植株对氮的积累，并能显著提高大豆产量。
- The results showed that: the content of essential and total Aa. and etc. were increased significantly by applying N fertilizer in Tumochuan. 结果表明，在土默川地区，施氮肥后，必需氨基酸含量、酸性和碱性氨基酸含量及氨基酸总量极显著增加；
- During flowering-podding stage of sweet pea,applying K fertilizer could reduced the flower and pod drop and applying N fertilizer could improved the commodity value of pod. 在花荚期增施钾肥可以明显减少落花落荚，增施氮肥可以明显提高豆荚的商品性。
- Take a long view, the amount of N absorption from two root zones of A almost equalized, and the use and residue and also lose efficiency of N fertilizer applied to two zones was close to each other. 总体来看，两个根区的氮素吸收基本相同，其氮肥的利用率、损失率和残留率相近。
- while availability of some mineral nitrogen is important to maximize soybean BNF and yield, applying N fertilizer to most legume crops will not increase yield and BNF. 尽管一定的矿质氮的供应在大豆增产和提高生物固氮方面非常重要，但施用氮肥对大多数豆类作物而言并不能增加产量和提高生物固氮。
- It must be emphasized that performance of inoculant and the amount of N legumes derive from BNF is directly linked to crop management including application of N fertilizer. 必须强调的是，接种物的表现和豆类作物从生物固氮获得的氮量与包括施用氮肥的作物管理直接有关。
- Nitrate content of fruit in aubergine vegetables was not affected by variety and amount of N fertilizer applied.Nitrogenous fertilizer had good action to quality of vegetables. 茄果类蔬菜果实中硝酸盐的含量不受氮肥品种和施用量的影响，氮肥对提高蔬菜品质有良好作用。
- The effects of Cu on rice at same level of N fertilizer were studied. 本文研究了微量元素铜在同样的氮肥量水平下对水稻生育的影响。
- The elongation stage is the key and sensitive stage, the N fertilizer applied at this stage could not only increase the yield of winter wheat but also increase the content of free amino acid and protein of grain, and improve the quality of grain protein. 冬小麦水氮高效的关键期和敏感期在拔节期，这个时期施氮可以增加子粒中游离氨基酸及蛋白质含量，提高其质量。
- The photoperiod characteristics played an important role in response to N fertilizer. 非光敏品种对高施氮量反应好，其最高产量需要更多的氮。
- Dressing N fertilizer in flowering stage led to the decrease of glutelin content. 开花期追氮导致谷蛋白含量降低；
- Experiment on high quality fertilizing amount of Brassica L. Var. Capitata L. 结球甘蓝的高优施肥量试验。
- Huang S M,Bao D J.Effect of N fertilizer application on nitrate content in soil and underground water[J].Agri-Environ.Prot.,2000,19(4):228-229. [19]黄绍敏;宝德俊.;施氮对潮土地下水硝态氮含量的影响[J]
- Because accumulation of photosynthate decreased, the increase in the N fertilizer made soluble sugar content in flag leaves reduce. 由于光合产物积累减少，增施氮肥使旗叶可溶性糖含量降低。
- For example, farmers must make choices about managing N in legume production systems.These choices are complicated by the negative interaction between N fertilizer and BNF. 例如农户在豆类作物的氮管理上做出选择，由于氮肥和生物固氮之间的负相关而使选择变得复杂。
- N fertilizer application in wheat significantly increased total N, ammonium N and nitrate-N contents in paddy field, resulting in high indigenous N supply of soil (INS). 结果表明，麦季氮肥的施用明显提高了稻季土壤全氮、铵态氮和硝态氮的含量，造成土壤背景氮偏高。
- The results showed that the model of n fertilizer for Hard Wheat, higher in jointing than in seedtime and spike-time, was beneficial for high yield as well as quality. 研究结果表明，氮肥运筹以“前轻中重后补充”模式的产量品质俱佳；
- Incorporating Chinese Milk Vetch into soil can reduce the chemical N fertilizer application rate by 44%, and also diminish the environmental risk of N runoff. 利用豆科紫云英轮作还田,可降低44%25的无机N肥用量,溶解性N浓度显著降低,是减小稻季N肥流失环境风险的有效途径。
- Fertilization which was related to fertilization amount and different growth stages improved photosynthetic rate of leaves. 增施肥料提高了叶片光合速率，并且它与施肥水平和生育阶段有关。
- Li W B, Wu L S, Liao H Q.Application and crop recovery of N fertilizer in high-yielding paddy fields of Taihu region[J].Acta Pedological Sinica, 1997, 34 (1): 67 - 73. [19]李伟波;吴留松;廖海秋.;太湖地区高产稻田氮肥施用与作物吸收利用的研究[J]
