Barthelemy H, Stark S, Michelsen A, Olofsson J. 2018. Urine is an important nitrogen source for plants irrespective of vege- tation composition in an Arctic tundra: Insights from a 15N- enriched urea tracer experiment. Journal of Ecology 106:367- 78....
A. oxygen B. nitrogen C. carbon dioxide D. hydrogen 相关知识点: 试题来源: 解析 C。本题考查生物方面的科普知识。植物进行光合作用需要的气体是二氧化碳,即“carbon dioxide”。“oxygen”是氧气,“nitrogen”是氮气,“hydrogen”是氢气,都不符合题意。反馈...
aPlants need the small molecules in order to grow. One of the key nutrients, besides water, is nitrogen and plants usually get nitrogen in the form of a nitrate molecule. 植物需要小分子为了增长。 其中一关键营养素,除水以外,是氮气以硝酸盐分子的形式,并且植物通常得到氮气。[translate]...
aNitrogen is what gives plants their green vibrancy, and is available in many different forms. Nitrogen is broken down into nitrates, which are water-soluable and absorbed through the roots. If you previously resorted to chemical fertilizers, be aware that most organic fertilizer is slow-release,...
Nitrogen is essential for the growth and development of plants. On the forest floor, microbes break down organic matter such as down fallen leaves and release nitrogen to the soil. The tree retrieves that nitrogen to build proteins and grow. However, as trees have access to more carbon, more...
Plants absorb this nitrogen, which they need to grow, so the transfer of this nitrogen to the forests is important. Forests near streams with salmon actually reach maturity faster than other forests. OK. So, why's all this important? Well, salmon are in trouble. ...
Although most animals cannot use nitrogen in a pure form, they do find it necessary for life, in the form of compounds like amino and nucleic acids. Plants also rely on this element for nutrition, with some plants being well known as nitrogen fixers, meaning that they efficiently trap it ...
Nitrogen Uses and Properties - Nitrogen is a diatomic gas with atomic number 7 and symbol N. Know the nitrogen atomic number, the atomic mass of nitrogen and atomic weight of nitrogen. Explore the Uses of Nitrogen.
aNitrogen is present as nitrate salts or urea, which dissolve in water into the nitrate ion (among other things). Phosphorus is incorporated as phosphate, which provides the phosphate ion. Potassium is generally in the form of potash, which ... well off-hand I forget what the form of pota...
aThe most important paramers are pH, Nitrogen (N), Phosphorus (P), and Potassium (K). Soil can acidic, neutral or alkaline and each plant has a range of pH in which it thrives. The ability of plants to asborb nutrients also depends largely on the pH value. Nitrogen is an ...