资源 标记: Plant Health
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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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The NPDN was established in 2002 in response to the need to enhance agricultural security through protecting health and productivity of plants in agricultural and natural ecosystems in the U.S. With support from the USDA-NIFA and through the collective efforts of many individuals representing...
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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...