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- Soil NOa--N content 土壤硝态氮
- The result showed that the soil available N content of the vineyard a low and in grade 5 while that was in grade 3 in the kaleyard. 结果显示：东丽区葡萄园的速效氮含量较低，处于5级；
- Added S0 and DCD could inhibit nitrification of soil NH4+, decrease soil NO3--N content, and maintain a high soil NH4+-N content within 72 days at NH4HCO3 treatment, and within 48days at urea treatment. S~0、DCD及其组合施入土壤可抑制NH_4~+向NO_3~-的转化，降低土壤NO_3~- -N水平，使土壤内NH_4~+ -N长时间保持较高水平。
- The promotion effect of the mycorrhizal inoculation on the N content of root、stem and leaf was disappear. 适量施肥有利于菌根接种苗叶中脯氨酸含量与可溶性糖含量增加，提高苗木抗旱性。
- The results indicated that the patterns of SRF siginificantly influenced the contents of NH4+-N in soil and unconspicuously influenced the available K contents of soil and NO3--N content of soil. 结果表明, 不同稻草还田模式对土壤NH4+-N含量影响较大, 对土壤速效钾含量和土壤NO3--N含量影响不大;
- The thermal decomposed mechanism of orthorhombic ammonium paratungstate,(NH4)10H2W12O4210H2O,was investigated by DAT,XRD and analysis of N content. 用热分析、X射线衍射及N含量分析研究了三斜仲钨酸铵（NH4）10H2W12O4210·H2O的热分解机理；
- Because the nitrogen is much cheaper than the argon,when melting the steel without strict N content,the all time nitrogen stirring can be used. 由于氮气与氩气相比有较强的成本优势,在冶炼对氮含量要求不苛刻的钢种时可以采用全程底吹供氮。
- Mycorrhizal infecting rate, soluble sugar, soluble protein,and N content of host plant were promoted by inoculation AM fungi under N-applied levels. 接种AM真菌提高了丹参根系菌根侵染率，叶片可溶性糖、可溶性蛋白和植株全氮含量；
- The N content CV values obtained from the 3 laboratories in 11 samples were higher(P<0.01) with Kjekldahl method than those with Dumas combustion method. 11种饲料样本在3个不同实验室间测定值的平均CV值表现为燃烧法明显小于(P<0.;01)凯氏法。
- Cattle manure application could decrease nicortine and total N content, while to increase the content of Cl, toatl sugar and deoxidize sugar of tobacco leaf. 施用牛圈肥有降低中部和下部烟叶烟碱和总氮含量的趋势，而总糖、还原糖则有增加的趋势；
- The new compound fertilizer also helped improve the qua lity of peanut fruit, increased the total N content in the peanut field and enha nced its fertility. 且该肥增加花生地中土壤的有机质和全氮含量，从而提高土壤肥力。
- This study involves corn pot test of AOL used as slow_release nitrogenous fertilizer on rice_soil,compared with the same N content of three mineral fertilizers. 本文将AOL作为缓释N肥，在水稻土上与三种等N量化肥进行玉米的盆栽试验，结果表明：施用AOL的处理玉米生物量比碳铵、尿素处理要高；
- The difference in nitrogen efficiency among 48 cotton varieties was studied in pot experiment by analyzing the plant height, dry matter weight and N content at seeding stage. 摘要通过砂培盆栽试验，分析棉株的株高、干物重以及全氮含量，研究了48个棉花品种苗期氮效率的差异性。
- After decalcium of prawn shells, deprotein and deacetylation were done at the same time using 憃ne step method? The N content of chitosan made in this way is about 8. 经“一步法”对酸脱钙后的虾壳同时进行脱蛋白与脱乙酰基处理生产的壳聚糖产品;蛋白含量约为8.;99;脱乙酰基效果略微差于“两步法”。
- The total N in tiller under grazing was higher than that of ungrazing (P0.05).The total N content in tiller was negatively interrelated with that of biomass. 分蘖节的含氮量与生物量呈负相关，放牧处理下月平均含氮量显著高于对照区(P0.;05)，而放牧区重度放牧的含氮量显著大于中牧区。
- There were genotypic differences in N content with Yangmei 5 having higher N content at booting in leaf and stem, but the results were opposite at maturity. 植株氮含量在基因型之间差异显著，孕穗期叶片和茎杆扬麦5号显著高于浙农大941，而成熟期则以浙农大941较高。
- Some plants push their roots deep into the soil. 一些植物的根深深长入土中。
- Such crops won't grow in limy soil. 这类作物不能在石灰质的土壤中生长。
- What shall we grow in this alkaline soil? 我们应该在碱性土壤里种什么？
- There are a lot of worms in the soil. 泥土中有许多蠕虫。
