Nitrogen nutrition of Panax quinquefolium Linne was studied by using 15N tracer technique.
通过15N示踪微区试验，研究了西洋参氮素营养特性。
The drought stress from jointing to heading stage decreased nitrogen nutrition efficiency of w…
拔节至抽穗期干旱胁迫极显著地降低冬小麦的氮素营养效率。
Nitrogen nutrition level has some influence on the growth and development of spring maize leaves.
氮素营养水平对春玉米的叶片生长有一定的影响。
Purple soil supplied the plants with more phosphorus and potassium nutrition and less nitrogen nutrition.
紫色类土壤提供给烟株吸收利用的磷钾养分较多，而氮养分较少。
Therefore, straw mulching is an efficient measure to maintain and improve the regime of soil nitrogen nutrition.
因此，秸秆施用是保持和提高土壤氮素营养的有效措施。
Study on the nitrogen nutrition efficiency and its mechanism is one of the hottest issues in plant nutrient genetics.
而对其机制的研究一直是植物营养遗传学研究的热点。
The drought stress from jointing to heading stage decreased nitrogen nutrition efficiency of winter wheat significantly.
拔节至抽穗期干旱胁迫极显著地降低冬小麦的氮素营养效率。
The results showed that lime soil supplied the plants with more nitrogen nutrition, less phosphorus and potassium nutrition.
结果表明，石灰岩类土壤提供给烟株吸收利用的氮养分较多，而磷钾养分较少。
The nitrogen nutrition absorbed by rice change apparently with different proportion of different nitrogen form in the water culture.
随着营养液中氮素形态比例的不同，作物吸收的氮素营养亦会发生明显改变。
Therefore, it is possible to use the activity of nitrate reductase as a parameter of diagnosing the nitrogen nutrition in sugarcane.
因此，把硝酸还原酶活力作为诊断蔗株氮素营养水平的指标是有可能的。
A pot experiment was conducted to study the effects of different nitrogen nutrition on photosynthetic characteristics in tobacco leaves.
采用水培方法研究了不同形态氮素和饼肥浸提液对烤烟光合生理特性的影响。
The objective of this study was to evaluate the effects of nitrogen nutrition on water status and photosynthesis in wheat under soil drought.
轻度土壤干旱下，小麦叶片仍能维持较好的水分状况，高氮营养对叶片光合作用有明显的促进作用。
Traditionally, crop nitrogen nutrition diagnosis is based on chemical analysis of plant tissues, which are labor-intensive, time-consuming and involving hazardous chemicals.
传统的作物氮素营养诊断以实验室常规分析为基础，费时、费力及需要有毒化学品。
Mid - nitrogen treatment (N2) had the highest yield, the higher water use efficiency and the best yield component factors compared to the other nitrogen nutrition treatment.
中氮处理(N2)具有最高的产量、较高的水分利用效率和最佳的产量构成要素。
These results suggested that the A. retroflexus during its invasion could adjust its allelopathic potential and biomass allocation to adapt different levels of nitrogen nutrition.
说明在入侵过程中，反枝苋可以通过调节自身的化感作用和生物量分配来适应不同的氮素营养条件。
In order to translocate N efficiently within plant and maximize growth, the relationship between nitrogen nutrition and the cost of C, photosynthesis, and water equilibrium were discussed.
讨论了植物的氮（N）素营养过程与C的消耗关系、光合作用与N投入的关系、水分平衡与植物的N素营养的关系。
The experiments results show that the effect of alternative freezing and thawing has a great influence on the organic matter, nitrogen nutrition, potassium nutrition and soil enzyme activities.
研究结果表明，冻融交替作用对黑土有机质、氮钾及酶活性产生重要的影响。
Melamine is commonly used in plastics and fertilizer, among other products. Its high nitrogen content can make foods appear to be protein-rich in standard nutrition tests.
三聚氰胺通常是制造塑料和化肥等产品的原料，添加在食品中可以增加产品含氮量通过营养成份测试，但被人体摄入将导致肾结石和肾衰竭，尤其会对婴幼儿健康造成严重影响。
Nitrogen phosphorus nutrition possess very fine adjustment action on root system growth of wheat.
氮磷营养对小麦根系生长具有明显的调节作用。
Nitrogen supply level and its interaction with FACE had less effect on the phosphorus nutrition of rice at its different growth stages.
氮处理以及氮与FACE处理的互作对水稻不同生育时期的磷素营养影响较小。
Through to ruminant livestock nutrition physiology the understanding, elaborated how enhances the feed protein and the nonprotein nitrogen in ruminant livestock production the use efficiency.
通过对反刍家畜营养生理的认识，阐述如何提高饲料蛋白质和非蛋白氮在反刍家畜生产中的利用效率。
Solution culture was used to study the effects of different nitrogen and calcium nutrition on oxalate and calcium content in edible parts of spinach.
通过溶液培养的方法研究了不同浓度的氮钙营养对菠菜可食部位草酸及钙含量的影响。
Strain could degrade oil effectively when there was plenteous nitrogen and phosphorus nutrition.
有充足的氮磷营养盐存在时，菌能够更高效的降解原油。
The effects of nitrogen and phosphorus nutrition in water stress were different indifferent indexes and in different growing stages, also in different levels of fertilizers.
氮磷营养对水分胁迫下马蹄金不同生长时期、不同抗旱生理指标的影响不同，不同施肥水平对指标的影响差异也很大。
Objective To discuss the clinical effect of hypocaloric and lower nitrogen parenteral nutrition on patients after surgery of gastrointestinal malignancy.
目的探讨胃肠道恶性肿瘤切除术后行低氮低热量肠外营养的临床效果。
Nitrogen for plant nutrition is mainly obtained from three sources: nitrogen-fixing plant, rain water and manure.
氮素是植物必要的营养元素之一，其主要来源有：生物固氮作用、降雨和灌溉水以及人工施肥。
The effect of the level and proportion of nitrogen, phosphorus and potassium on the nutrition and industrial quality of wheat was studied with Yumai 34 and Zhengzhou 9023 as materials.
以豫麦34号和郑州9023为材料，研究了氮、磷、钾施用量及其配比对小麦营养品质和加工品质的影响。
Optimal nitrogen sparing has been shown to be achieved when all components of the parenteral nutrition mix are administered simultaneously over 24 hours.
当肠外营养混合液的所有成份同时给予超过24小时时，已显示达到了最适的节氮效应。
Nitrogen and phosphorus are the necessary mineral nutrition to trees. They determine the growth of individual, the development of community and the productivity of ecosystem in the nature.
氮、磷是树木必需的矿质营养，在自然界中它们影响着树木个体的生长、群落的发育及整个生态系统的生产力。
Nitrogen and phosphorus are the necessary mineral nutrition to trees. They determine the growth of individual, the development of community and the productivity of ecosystem in the nature.
氮、磷是树木必需的矿质营养，在自然界中它们影响着树木个体的生长、群落的发育及整个生态系统的生产力。
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