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- Studies on the Soil Nitrate Content and Nitrogen Balance in Winter Wheat Plants under Limited Irrigation Condition 冬小麦限水灌溉条件下土壤硝态氮变化与氮素平衡
- Soil nitrate content 土壤NO3-N含量
- The nitrate content in turnip was reduced,while soil organic matter content in the rhizosphere was signifi... 施用有机肥料萝卜的硝酸盐含量明显下降,当季作物收获后根际土壤有机质含量明显提高。
- On the slightly acid soil, application of NPK+DCD+Mo enhanced lettuce yield by 21.4% and improved its quality, decreasing nitrate content by 27.3%. 微酸性土以氮磷钾 +DCD +Mo配施较施氮降低茎硝酸盐含量 2 7.;3%25;改善了营养品质;提高产量 2 1
- The nitrate content in turnip was reduced, while soil organic matter content in the rhizosphere was significantly increased by using organic manure. 施用有机肥料萝卜的硝酸盐含量明显下降，当季作物收获后根际土壤有机质含量明显提高。
- 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]
- Difference among different nutrient formula was significant in nitrate content. 不同营养液配方间硝酸盐含量差异显著。
- Effects of NPK Ratio in Fertilization on Yield and Nitrate Content of Radish. NPK肥不同配比对萝卜产量及硝酸盐含量的影响
- BELANGER G,ZIADI N,WALSH J R,RICHARDS J E,MILBURN P H.Residual soil nitrate after potato harvest[J].Journal of Environmental Quality,2003,32:607-612. 郭胜利党廷辉郝明德.;黄土高原沟壑区沟坡地土壤剖面中矿质氮的分布特征[J]
- A field experiment was conducted on two soil types in the Changsha suburb of Hunan Province to study the effects of hydroquinone (HQ),dicyandiamide (DCD) and thiourea (TU) on the nitrate content in soil and pakchoi and on the yield of pakchoi. 通过田间试验;对湖南长沙地区的红菜园土和冲积菜园土两种土壤条件下氢醌(HQ)、双氰胺(DCD)和硫脲(TU)3种硝化抑制剂对土壤和小白菜硝酸盐含量及小白菜产量的影响进行研究.
- Li W Q,Zhang M,Li H F,Zan L S.The study of soil nitrate status in fields under plastic house gardening[J].Acta Pedologica Sinica,2002,39(2):283-287. [9]李文庆;张民;李海峰;昝林生.;大棚土壤硝酸盐状况研究[J]
- The results showed that all the test nitrification inhibitors could significantly decrease the nitrate content in soil and pakchoi during whole growth stage,among which,DCD had the best effect,but the effect was differed on different soil types. 结果表明;3种硝化抑制剂在试验的各个时期均不同程度地降低了土壤和小白菜的硝酸盐含量;其中以双氰胺的效果最好.;但不同供试土壤条件下的试验结果不完全一致
- Moreover, nitrate content was reduced by 7.64% and 11.77% respectively through applying DCD in soil or foliar spraying compound agents of oxalate, Gly and KCl before harvest, while the yield and quality were not affected significantly. 施用双氰胺和采收前喷施草酸、甘氨酸、KCl复合剂均显著减少蔬菜对硝酸盐的积累;分别使小白菜硝酸盐含量降低了7.;64%25;11
- Based on the long-term field experiments, the relationships between soil nitrogen balance, nitrogen utilization efficiency (NUE) and soil nitrate were studied. 摘要 利用长期肥料试验资料研究了土壤氮素平衡、氮肥利用率和土壤硝态氮之间的相互关系。
- Effect of nitrogen fertilizer on yield and nitrate content in Brassica oleracea L. Var. Capitata L. 氮肥对结球甘蓝产量与硝酸盐含量的影响。
- The nitrate content of radish, pachyrhizus, cabbage and greengrocery is much higher above the required limit. 其中白萝卜、地瓜叶、大白菜、青菜等超标严重。
- The method for the determination of the nitrate content in fresh vegetable by ultraviolet spectrophotometry is set up. 建立了紫外分光光度法测定蔬菜鲜样中硝酸盐含量的方法。
- In this paper testing of nitrate content in water with a HACH DR/5000TM Spectrophotometer is reported. 摘要采用美国HACH公司最新推出的DR/5000紫外可见分光光度计，及其专用试剂测定水中硝酸盐氮含量。
- In the each stage of the cotton growth remnant of soil nitrate nitrogen was higher, but loss of apparent budget of soil nitrate was higher only in the seedling stage and the beginning of bell stage. 棉花生长发育的各个时期土壤硝态氮的残留都很高,但仅在苗期、初铃期表观损失较高。
- Ye Y L,Li L,Sun J H,Zhang F S.Effect of root separation on pl ant nitrogen uptake and soil nitrate nitrogen residual in faba bean/maize intercropping[J].J.Soi1 Water Conserv.,2005,19(3):13-17. [19]叶优良;李隆;孙建好;张福锁.;地下部分隔对蚕豆/玉米间作氮素吸收和土壤硝态氮残留影响[J]
