必需营养元素

硫（S）素是植物必需营养元素之一。

Sulfur ( S ) is one of the essential elements for plant growth .

P是植物生长的必需营养元素之一。

P is one of the necessary nutrition elements for plant growing .

还初步探讨了CO2浓度升高对稻米中人类必需营养元素的不足（或隐性饥饿）的影响。

Effect of elevated pCO_ ( 2 ) on the possible hidden hunger in rice grain was also discussed .

大蒜收获后，分析测定了蒜头的10种必需营养元素和Se的不同组分以及新鲜蒜头品质（大蒜素、维生素C）。

After the garlic bulbs were harvested , 10 essential mineral elements , different Se components and the fresh quality ( Allicin , Vitamin C ) of garlic were determined .

离子色谱法在测定烟叶必需营养元素中的应用

The Determination of Nutrition Elements in Tobacco Leaves by Ion Chromatography

钙、硼是植物生长发育的必需营养元素。

It is indispensable to calcium and boron for plant growth .

磷是植物重要的必需营养元素。

P is an important essential nutrient for the plants .

强化的过程并不会导致必需营养元素的不均衡。

The fortification process does not cause an imbalance of essential nutrients .

叙述了农作物病害的发生与必需营养元素的关系。

The relationship between the occurrence of crops diseases and necessary nutritional elements is described .

在作物所有必需营养元素中，氮是限制植物生长和形成产量的首要因素。

Nitrogen is one of the major factors limiting crop growth and yield among the necessary nutrient elements for plant .

锌是植物、动物的必需营养元素，又是环境检测的金属元素之一。

Zinc is the necessary nutrition element , and is one of the necessary test elements of heavy metal in environment test .

磷是仅次于氮的作物第二大必需营养元素，对作物生长发育具有不可替代的作用。

Phosphorus ( P ) is one of the most necessary nutrition elements for crop , which plays an irreplaceable role in plant growth and development .

收集了国内外6个产地不同等级的香料烟样品，对其内在化学成分、必需营养元素和挥发性致香物质等进行了分析。

Different grades of oriental tobacco samples from6producing areas at home and abroad were collected and analyzed for chemical components , necessary nutrition elements and volatile flavor sub-stance .

硫是作物生长发育的必需营养元素，但土壤的缺硫现象日益严重，土壤硫营养逐渐成为作物产量和质量的重要限制因子。

Soil sulphur is the necessary element for plant growth , while the deficiency of sulphur of soil is becoming more serious . In addition , sulphur nutrient has gradually been the limited factor of crop yield and quality .

磷是植物生长发育的必需营养元素之一，而土壤中绝大部分的磷素不能被植物直接利用。

Phosphorus is one of the necessary elements for the growth of the plants . Application of phosphorus fertilizer is a very crucial management to increase crop yields , because most of the phosphorus in soil can not be utilized by plants directly .

氮磷作为作物生长的必需营养元素，对旱地小麦优质高产起重要作用，且不合理的氮磷投入造成了作物品质下降，资源浪费以及环境污染等问题，制约农业的高效和可持续发展。

Nitrogen and phosphorus are the essential nutrients for crop growth , and play an important role on the dryland high yield of wheat , however unreasonable application nitrogen and phosphorus caused crop quality drop , wasting of resources and environmental pollution , furthermore restricting agricultural sustainable development .

磷（P）是植物必需的营养元素，在作物的生长发育、新陈代谢中起着不可替代的作用。

Phosphorus ( Pi ) is one of essential nutrient elements , which plays an irreplaceable role in the growth and metabolism of the crops .

硒（Se）是人体必需的营养元素之一，缺乏或过量都会使人产生多种病症。

Selenium ( Se ) is an essential nutrient element for human beings . Many diseases may be caused by Se deficiency or Se excess .

硫是茶树必需的营养元素之一，被称为仅次于NPK的第四要素。

Sulphur is one of the essential elements of tea plant and regarded as the fourth key element next to NPK .

硒是哺乳动物最重要的必需微量营养元素之一，它主要以硒代半胱氨酸（Sec）的形式存在于硒蛋白中。

Selenium is one of the most important essential micronutrient elements in mammal , which mainly was shown to be incorporated as selenocysteine ( Sec ) in selenoprotein .

铁是硅藻生长必需的营养元素，是硅藻细胞内某些氧化还原载体和辅酶的组成成分；

Fe is the carrier of oxidation and deoxidization as well as the composition of coenzyme .

根据本研究结果，结合他人在植物硒研究方面己经做过的工作，作者认为：硒是植物必需微量营养元素；

According to the result and the work on the selenium in plant by the other researcher .

检测出19种元素，其中必需的营养元素9种，重点比较了必需的微量营养元素的含量。

There were 19 metal elements in the seeds , among them 9 were essential nutrient elements .

氮是植物生长所必需的营养元素，是土壤生产力的重要限制性因素。

Nitrogen is essential nutrients for plants , and is also an important limiting factor in soil productivity .

锌作为维持人体健康的必需微量营养元素，对人体健康起着至关重要的作用。

Zinc plays a vital role in maintaining the health of human body as an essential trace nutrient elements .

镍是一种稀有金属元素，也是动植物和人的必需营养微量元素。

Nickel is one of the rare metals , and it is indispensable to plant , animal and human beings .

锌是植物必需的营养元素，同时也是一种常见的环境有毒重金属元素。

Zinc is not only an essential element for plant growth , but also is a poisonous heavy metal element .

硫作为作物所必需的营养元素，在作物的生长代谢过程中起着许多重要的作用。

Sulfur is an essential element in crops nutrition , which plays a vital role in crop growth and metabolism .

磷不但是动植物必需的营养元素，也是重要的环境污染因子。

Phosphorus was not only the essential nutritional element for plants and animals , but also significant factor of environment pollution .

钼是一种动、植物必需的营养元素，但高浓度的钼却能对动、植物引起毒性。

Mo is a significant nutrient element for a variety of biological functions , but it may be potentially toxic at high concentration .