查询词典 nitrogen

Results Compared with the old wells, the water quality of improved wells was better, which expressed that the average value of nitrate nitrogen, chloride and fecal coliform group were significantly improved, and average value of chemical oxygen demand, ammonia nitrogen, nitrite nitrogen also had taking a turn for the better.

结果 水井改进后水质指标硝酸盐氮、氯化物、粪大肠菌群平均值明显好转，耗氧量、氨氮、亚硝酸盐氮平均值有好转。

The results showed that highly significant differences were observed between the two nitrogen treatments and also among family lines in the 4 nutrient contents. Applicating nitrogen may increase the contents of CP and CF in stalk, but decrease the contents of ADF and NDF. The variance segregation of stalk nutrients of F2∶4 lines were in normal distributions and with over parent segregation in some degree. The sensitivity to nitrogen fertilization varied with maize genotypes.

结果表明，两种氮肥处理之间以及不同家系之间各营养成分含量差异均达极显著水平；增施氮肥有利于提高秸秆的粗蛋白和粗脂肪的含量，降低酸性洗涤纤维和中性洗涤纤维的含量；两种氮水平条件下，不同家系之间秸秆各主要营养成分含量的变异性分离均符合正态分布，并存在不同程度的双向超亲分离；不同基因型的玉米对氮素的敏感性各异。

The teatments of urea application rate reduced by 5%～15% and added compound nitrogen fertilizer synergists,the growth and nitrogen content of maize were not significat changed,and the total ~(15)N uptake and nitrogen uptake by maize were the same as CK_2 or increased a little.

氮素减量5%~15%时配施复合氮肥增效剂对玉米生长和含氮量影响不显著，15N和吸氮总量与不施增效剂的处理相当或有所提高。

Under the field condition,maize yield,total uptake,net uptake,physiological rate and agronomic use efficiency of nitrogen were the same as CK or increased.The apparent utilization rate of nitrogen was enhanced by 14.8%～15.2% treated with urea reduced by 5%～15%(7.8～23.7kg/hm~2) and added with compound nitrogen fertilizer synergists.

在大田条件下，尿素氮减少5%~15%(即减少施氮7.8~23.7kg/hm2)配施复合氮肥增效剂不影响玉米的单季产量，玉米植株吸氮总量、氮素净吸收量、氮肥生理效率和农学效率与不施增效剂的处理相当或增加，氮素表观利用率提高

The average level of the soil available potassium was 119.96 mg/kg, which decreased 18.94 mg/kg and 1.05 mg/kg one year averagely. But the decreasing trend alleviated in recent years. There were 39.5 kg/hm^2 nitrogen and 30.9 kg/hm^2 phosphorus (P2O5) more than needed averagely, and 150.0 kg/hm^2 potassium (K2O) in deficiency. Though the fertilizer application was high and the rate of fertilizer was 647.96 kg/hm^2 in nutrient, the ratio of organic to inorganic was still unreasonable. The ratio of the chemical fertilizer nitrogen phosphorus (P2O5) and potassium (K2O) was 1:0.42:0.14. The nitrogen application was enough and even higher than that was needed. The phosphorus was proper elementarily and potassium was in deficiency. The yield of wheat which was the main crop increased slightly and that of other autumn harvest crops was stable.

土壤速效钾7年平均值119.96 mg/kg，比第二次土壤普查时下降了18.94 mg/kg，平均每年以1.05 mg/kg的速度下降，但近年来下降趋势变缓；养分平衡中氮素平均盈余39.5 kg/hm^2，磷素(P2O5)盈余30.9 kg/hm^2，钾素(K2O)亏缺150.0 kg/hm2；全省施肥水平较高，每公顷总施肥量折纯养分647.96 kg，但有机无机比仍不合理，化肥氮、磷、钾投入比例1：0.42：0.17，氮肥充足，部分地区用量偏高，磷肥基本合理，钾肥不足；主要农作物小麦产量略有上升，其它主要秋收作物产量基本稳定。

The nitrogen combined for a time into the leaves and root was easier to export to fruit, which the strong nitrogen sink and the most competitive ability for nitrogen in the plant of sweet pepper.

氮素营养水平尽管很少影响新近固定的〓C在不同器官间的分配，但却制约着〓C在体内的运转和再分配。氮不仅制约着新近吸收的〓N在不同器官中的分配，且影响〓N的运转。

The nitrogen absorption, the utilization of nitrogen fertilizer by flue-cured tobacco, the AN values of the soil at differentapplication of nitrogen were studied with the method of 15N tracer.

作物在其生长发育过程中吸收的氮素主要来自于土壤中可利用的氮和人们所施用的氮素肥料，这二种可利用的氮素来源倍受人们关注。

Influence of different nitrogen fertilizer application levels and organic fertilizer rate and nitrogen forms and topping stages of sun-cured red tobacco on the main nitrogen compounds and the yield and quality were studied through field experiment in Fenghuang county ,the city of Hunan province.

2004-2005年，在湖南省湘西自治州凤凰县通过大田试验，初步探讨了氮用量、有机无机肥配比、氮素形态配比、打顶时期对晒红烟主要含氮化合物含量及产质效应的影响，研究结果如下： 1、施氮水平对晒红烟烟碱及其它含氮化合物的含量具有明显影响。

And lower the pod shell soluble sugar content at the beginning of seed filling stage. The effect of nitrogen was different at different growth stages.3、Effect of nitrogen levels on soybean nitrogen metabolismNitrogen can increase nitrate reductase activity, and the effect was the most obvious in the peak period.

施氮可以提高开花期叶片淀粉含量，降低茎秆中可溶性糖含量，在成熟期降低叶片可溶糖含量，并在鼓粒始期降低荚皮可溶性糖含量。3、氮素水平对大豆氮代谢酶影响施氮可以提高硝酸还原酶的活性，且在酶活性峰值期作用效果最明显。

At the same time, there were complementation of water and nitrogen between spring-sown maize and summer-sown maize in the system of relay-planting. Spring-sown maize could get water and nitrogen from the summer-sown maize zone, and also the roots of summer-sown maize could touched to the regions of spring-sown maize to get water and nitrogen.

同时，套作体系中春、夏玉米存在对氮素和水分的互补利用，春玉米根系可以伸展到夏玉米区，而夏玉米也可以吸收利用春玉米区，从而达到养分与水分的互补利用。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。