植物营养
FAO -
An expanding world population and the urgency of eradicating hunger and malnutrition call for determined policies and effective actions to ensure sustainable growth in agricultural productivity and production. Assured access to nutritionally adequate and safe food is essential for individual welfare and for national, social and economic development. Unless extraordinary efforts are made, an unacceptably large portion of the world’s population, particularly in developing countries, could still be chronically undernourished in the coming years, with additional suffering caused by acute periodic shortages of food.
For biomass synthesis, which serves as the food resource for humans and animals, nutrient supply to plants is a prerequisite. Therefore, an adequate and appropriate supply of plant nutrients, is a vital component of a crop production system.
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关键资源2009-01-20 All plants need certain mineral elements for proper growth, development, and maintenance. The basic structure of all organisms is built of carbon (C), oxygen (O) and hydrogen (H). Plants obtain these elements from water (H2O) in the soil and carbon dioxide (CO2) in the air, so no input is...
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2002-01-20 The conventional view of the relationship between soil nutrients and crop productivity in the tropics is leading to both damaging agricultural policies and inefficient and damaging farm-level practices. There is no need to use the huge quantities of chemical fertilizers that are so often...
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俗话说“你不知道你有一个问题你就不可能解决问题”，这是诊断植物营养缺乏基础科学的支撑。多年来，很多农民和科学家一起工作，通过多种线索来判断农作物的营养缺乏。这些线索和症状十分有用，特别是在土壤和植物组织试验做不了或行不通时。
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Research, led by Dr Guillaume Chomicki from the Department of Plant Sciences, University of Oxford, has demonstrated that millions of years of ant agriculture has remodelled plant physiology. Farming ants deposit nitrogen-rich faeces directly inside plants, which has led to the evolution of these...
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Abstract, International Journal of Molecular Science, 2019 K+is an essential cation and the most abundant in plant cells. After N, its corresponding element, K, is the nutrient required in the largest amounts by plants. Despite the numerous roles of K in crop production, improvements in the...
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Proceedings of a symposium held at Muscle Shoals, Alabama, April 20-22, 1971, and cosponsored by the Tennessee Valley Authority and the Soil Science Society of America.
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2017-10-03 Soils of smallholder farmers are often depleted of organic matter and available soil nutrients, and may also be acidic and/or saline. We will review the causes and extent of these soil-related challenges in the developing world. A variety of possible management responses to these challenges will...
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2011-01-20
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2013-05-07 Just as he demystified the soil food web in his ground-breaking book Teaming with Microbes, in this new work Jeff Lowenfels explains the basics of plant nutrition from an organic gardener's perspective. Where Teaming with Microbes used adeptly used microbiology; Teaming with Nutrients employs...
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The International Plant Nutrition Institute (IPNI) is a not-for-profit, science-based organization dedicated to the responsible management of plant nutrition for the benefit of the human family. IPNI began operating in January of 2007 and now has active programs in Africa, Australia/New Zealand,...
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1993-06-15 Amazon.com Description This book discusses the role of essential nutrients in relation to nearly two dozen crops. Use the book's 307 color photographs to diagnose disorders in the field. The accompanying text explains symptoms in detail, with information provided by 31 crop experts. Covers the...
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A comprehensive collection of crop nutrient deficiency photos. A range of nutrient deficiency examples are provided for 14 prominent crops. Text and diagrammatic descriptions are also provided. alfalfa, banana, barley, canola, citrus, cotton, maize, oil palm, potato, rice, sorghum, soybean,...
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This collection provides a comprehensive assortment of hundreds of classic cases of crop nutrient deficiency documented from research plots and farm fields located around the world. IPNI would like to thank our contributors; many are agricultural researchers, extension staff, crop scouts, and...
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Including Agribiological Research 85 Years of Excellence. With its focus on soil-plant interactions, the Journal of Plant Nutrition and Soil Science is one of the leading journals on this topic. It publishes reviews, high-standard original papers, and short communications covering the entire...
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Plant and Soil publishes original research papers and solicited review articles that deal with the interface of plant biology and soil sciences, and are of general interest. We give preference to those manuscripts with a strong mechanistic component which develop and test hypotheses aimed at...
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Plantnutritionistsacross the globe are on their toes to find ways and means to identify nutrient constraints as early in standing crop season as possible while dealing with perennial crops. Exciting progress has been made over the years, and accordingly, the basis of nutrient management strategy...
- Abstract -Journal of Plant Nutrition, 2006 On-farm studies were conducted during 2002–2004 to determine fertility status, including sulfur (S) and micronutrients, and crop response to fertilization on farmers’ fields in the semi-arid zone of India. Nine hundred-twenty four soil samples taken from...
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Vegetable crops thrive with the right combination of nutrients. By learning about the nutrients already present in their soil, farmers can determine the right amount and right type of fertilizer to use to promote good plant growth. In this video produced by the World Vegetable Center for the...
- 2006-01-20 An expanding world population and the urgency of eradicating hunger and malnutrition call for determined policies and effective actions to ensure sustainable growth in agricultural productivity and production. Assured access to nutritionally adequate and safe food is essential for individual...
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Access Agriculture Training Video Onions grow well under many different conditions, but when grown in the rainy season onions have a greater chance of getting sick. Onion diseases can make the leaves fold and reduce your yield. Diseases can spread with soil, seed or infested crop residues. ...
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Access Agriculture Training Video Onions need rich, fertile soil. Only grow onions once in 3 years in the same field. Plant the onions on raised beds, especially in the rainy season. Transplant when the onions are about 6 weeks old. Plant the onions 10 centimetres apart. By taking good care of...
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Access Agriculture Training Video Onion seedlings need a healthy, loose soil. Add well-aged manure or compost. In the rainy season you need to raise the seedbed so the onion roots will not rot. If you use quality seed, most of the seed will germinate and you need much less of it. Onion seedlings...
- 这也有其他语言版本:
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- हिन्दी भाषा (hi)
- English (en)
- Français (fr)