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nitrogen forms     
相关语句
  氮素形态
     Effects of four nitrogen forms(NO~-_3-N∶NH~+_4-N were 100∶0,75∶25,50∶50 and 25∶75,respectively)on the muskmelon(cv.Chunli and Milinglong) plant dry matter accumulation and leaf nitrogen metabolism were investigated.
     该文研究了4种氮素形态配比(NO3--N∶NH4+-N分别为100∶0,75∶25,50∶50和25∶75)对基质栽培网纹甜瓜(品种为“春丽”和“蜜玲珑”)干物质积累和氮代谢的影响。
短句来源
     Effects of four nitrogen forms (NO-3-N:NH+4-N were 100:0,75:25,50:50 and 25:75, respectively)on the photosynthetic characteristics of muskmelon (cv. Chunli and Milinglong) were investigated by using substrate culture.
     本文研究了4种氮素形态配比(NO-3-N/NH+4-N分别为100:0,75:25,50:50和25:75)对基质栽培网纹甜瓜(品种为“春丽”和“蜜玲珑”)光合特性的影响。
     INELIENCE OF NITROGEN FORMS ON NO_3~-, NO_2~2 AND Vc CONTENTS IN LEAF VEGETABLES
     氮素形态对叶菜类NO_3~-、NO_2~-和Vc含量的影响
短句来源
     Effects of four nitrogen forms ratios(NO3--N : NH4+-N were 100: 0,75 : 25,50: 50 and 0: 100, respectively)on the lettuce (cv. Hongnong and Lvling) growth and the activity of protec-tiase enzymes were investigated.
     研究了4种氮素形态配比(NO3--N:NH4+-N分别为100:0,75:25,50:50和O:100)对生菜(品种为“弘农”和“绿领”)生长、品质和叶片保护酶活性的影响。
短句来源
     Effects of different nitrogen forms(NO_3~——N,NH_4~+-N and the mixture of NO_3~——N and NH_4~+-N) and partial-root water stress on biological response of rice plants were studied by using the method of nutrient solution culture in a split-root system with simulated water stress(by adding PEG,6000).
     采用室内分根营养液培养及PEG模拟水分胁迫的方法,研究不同氮素形态(NH4+-N、NO3--N、NH4+-N/NO3--N比为50/50)对水稻局部根系遭遇水分胁迫后的生物学响应状况。
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  氮形态
     Transmission electron microscopy was used to observe effects of two pH levels(4.0 and 6.0)and nitrogen forms(NH~+_4-N,NO~-_3N) on the root ultrastructure and Ca~(2+) distribution in wheat root.
     利用电镜技术研究了不同pH(4.0和6.0)和氮形态(NH4+-N和NO3--N)对小麦根系超微结构及根中Ca2+分布的影响。
短句来源
     By using the method of nutrient solution culture and simulated water stress (by adding PEG6000), the effects of different nitrogen forms (NO_3~-, NH_4~+, and the ratio of NO_3~- to NH_4~+ is 50∶50) and water stress interaction on nitrogen use efficiency and the characteristics of nitrogen consumption of rice plants at the tillering stage were studied.
     采用室内营养液培养及PEG模拟水分胁迫的方法,在3种供氮形态[NH4+、NO3-、NH4+/NO3-(质量比)为50∶50]下,主要研究分蘖期水稻在非水分胁迫及水分胁迫条件下的氮素利用效率及对不同形态氮素的消耗。
短句来源
     The biomass of rice was not affected by partial-root water stress in the three nitrogen forms,but rice root parameters with sole nitrate supply decreased significantly under water stress compared to those without water stress.
     局部根系水分胁迫对3种供氮形态营养下水稻总生物量没有明显影响,但对单供NO3--N营养水稻根系的生物量、根系总长、根体积、平均直径以及根表面积的影响最大,均以未受水分胁迫的一侧根系生物量明显高于另一侧(受水分胁迫)。
短句来源
     By using nutrient solution culture and simulated water stress by PEG(6000),the effects of different nitrogen forms(NO~-_3-N, NH~+_4-N and the mixture of NO~-_3-N and NH~+_4-N) and water statuses(non-water stress and water stress) on water use efficiency(WUE) and the biological characteristics of rice plants at seedling-tillering stage were studied.
     采用室内营养液培养及聚乙二醇(PEG6000)模拟水分胁迫处理的方法,在3种供氮形态(NH4+/NO3-比为100/0,50/50和0/100)和2种水分条件(非水分胁迫及水分胁迫)下,研究了水稻苗期—分蘖期的生长及其水分利用效率。
短句来源
     The results show that,under a slight water stress(5% of PEG),the biomass of paddy plants under nutrient supply of ammonium and the mixture of nitrate and ammonium is higher than that under the normal moisture conditions,which reveals that a slight water stress can stimulate the growth of paddy plants under nutrient supply of these two nitrogen forms.
     结果表明:在轻度水分胁迫(5%PEG,约相当于-0.05 MPa)条件下,供铵和供铵硝混合态氮水稻生物量高于正常水分条件下的相应供氮形态处理,说明适度水分胁迫可以刺激这2种供氮形态水稻的生长;
短句来源
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  氮肥形态
     Effect of Osmotic Stress on Proline and Endogenous Hormone Content in Flue-cured Tobacco Leaves under Different Nitrogen Forms
     渗透胁迫下氮肥形态对烟叶脯氨酸和内源激素含量的影响
短句来源
     Effect of Different Nitrogen Forms and Application Methods on Growth and Nitrate Accumulation of Spinach
     氮肥形态及施用方式对菠菜生长和硝酸盐累积的影响
短句来源
     (2). There are obvious difference in the contents of endogenous hormone and polyamine content under osmotic stress and different nitrogen forms.
     (2)渗透胁迫和不同氮肥形态处理烤烟叶片内源激素和多胺含量有明显的差异。
短句来源
     This paper studied the effect of osmotic stress on endogenous hormone and polyamine content in flue-cured tobacco under nitrogen forms by hydrocultivate examination using PEG(6000) as infiltrator,and discussed the effect of external polyamine on endogenous polyamine content and activities of their metabolize enzyme under drought press.
     本文采用水培试验,以聚乙二醇为渗透剂,研究了渗透胁迫和不同氮肥形态对烟叶内源激素和多胺含量的影响,并采用土培试验探讨了外施多胺对水分胁迫下烟叶多胺含量及其代谢酶活性的调节作用,主要研究结果如下:
短句来源
     There were different responses in cultivars with high yield and low protein content to nitrogen forms.
     高产低蛋白品种对氮肥形态反应不一。
短句来源
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  形态氮素
     By using the method of nutrient solution culture and simulated water stress (by adding PEG6000), the effects of different nitrogen forms (NO_3~-, NH_4~+, and the ratio of NO_3~- to NH_4~+ is 50∶50) and water stress interaction on nitrogen use efficiency and the characteristics of nitrogen consumption of rice plants at the tillering stage were studied.
     采用室内营养液培养及PEG模拟水分胁迫的方法,在3种供氮形态[NH4+、NO3-、NH4+/NO3-(质量比)为50∶50]下,主要研究分蘖期水稻在非水分胁迫及水分胁迫条件下的氮素利用效率及对不同形态氮素的消耗。
短句来源
     1. Rhizosphere supplied different nitrogen forms 3 to 7 days, the results indicated: In NO3—treatment, the seedlings growed better than NH_4~+ treatment. The photosynthesis rate、transpiration rate and stomata conductance by supplied NO_3~- were upper than NH_4~+ treatment.
     1.根际供应不同形态氮素,处理后3 -7 d测定,结果表明:NO_3~-处理与NH_4~+处理相比,NO_3~-更能促进植株生长,NO_3~-处理植株生长量大,有较高的光合速率,蒸腾速率和气孔导度;
短句来源
     The effect of different nitrogen forms on tobacco (Nicotiana tabacum L. K326) growth, water uptake and transpiration, nutrients uptake and distribution and circulation of potassium was studied.
     本研究以烟草(Nicotiana tabacum L.K 326)为材料,在砂培条件下研究了不同形态氮素并结合使用外源ABA和6-BA对烟草生长、水分吸收和蒸腾、养分吸收和分布以及钾在烟株体内循环的影响。 主要结果如下:
短句来源
     The effects of different nitrogen forms (NH~+_4-N and NO~-_3-N) and ratios on the photosynthetic characteristics of the Pinus koraiensis seedlings were studied by pot experiment and the physiological mechanism was discussed.
     通过盆栽实验,研究了NH+4 N与NO-3 N两种形态氮素不同配比对红松幼苗光合特性的影响及其生理机制。
短句来源
     The approaches and mechanism of iron reutilization efficiency in maize plants, as affected by iron supply and nitrogen forms (NO - 3 N and NH + 4 N),was studied in nutrient solution under controlled conditons.
     用营养液培养及同位素示踪方法研究了提高玉米体内铁再利用效率的机理及可行途径,并对铁的供应状况和两种形态氮素(NO-3-N和NH+4-N)对玉米体内铁再利用效率的影响进行了具体探讨。
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  nitrogen forms
Bio-available amino acids and mineral nitrogen forms in soil of moderately mown and abandoned mountain meadows
      
Implanted carbon forms titanium carbide at lower concentration than nitrogen forms titanium nitride.
      
The influence of different nitrogen doses given in different nitrogen forms on the nitrate contents of kohlrabi plants was examined in greenhouse-and field experiments.
      
The distribution pattern of these nitrogen forms has been also investigated during the ripening process.
      
The amino nitrogen forms two hydrogen bonds with two chloride ions and assumes a tetrahedral configuration.
      
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