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- Utilization rate of N fertilizer (NUR) 籽粒吸氮量
- the maximum economic rate of N fertilizer application 氮肥经济施用量
- 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。
- rate of N fertilizer 施氮量
- 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。
- 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]
- 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;
- 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。
- 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]
- 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。
- Silicic acid had no effect on soil pH,ammonium accumulation and the rate of N mineralization. 两种硅肥对施入土壤中氮的去向均无明显影响。
- In other hand, however, the yield of tuberous roots were limited mostly at the rate of 60 kg/ha of N applied. 对块根之收量则除台北、台中、台南、高雄四地区在50公斤施用量时对无燐区之增收率有10至20%25外,共他地区均不显著。
- The effects of different types and application methods of N fertilizer on greengrocery (Brassica campestris L. ssp.Chinnesis) yield and nitrate content were investigated in a field experiment. 摘要 采用田间试验研究了氮素形态、用量及施用时期对小青菜产量和硝酸盐含量的影响。
- What's the going rate of computer programmers? 计算机程序设计人员的一般工资是多少?
- 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。
- By power we mean the rate of doing work. 我们说功率就是指做功的速率。
- The reduction speed is increasing along with the concentration of N and P in water, whereas the removal rate of N and P is descending. 氮磷浓度的降低速率随水体中氮磷浓度的升高而升高,而对氮磷的去除率随水体中氮磷浓度的升高而降低。
- In the late growing stage, the transferring rate of N, P and K followed the order of sandy loam>loam> loamy clay >clay loam. 同时施肥使得叶片和茎鞘中的氮磷钾转移率略有降低。
- The rate of incidence of a disease. 发病率发生疾病的概率
- The rate of inflation must be held down. 通货膨胀率必须控制在低水平上。