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carbon nutrient in plant
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carbon nutrient in plant
Encyclopedia
农学
植物碳营养
释
carbon nutrient in plant
植物碳营养
碳居17种必需营养元素之首,是植物有机体的主要组分。在1800年被确定为必需营养元素。正常生长植株的干物质中碳元素的平均含量在45%左右。
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principle of ex officio
principle of extension
principle of extensionality
principle of extension of domain
principle of fairness
principle of faunal succession
principle of Fermat
principle of final common path
principle of free provenance
principle of frequency modulation measurement
principle of functoriality
principle of general covariance
principle of general elimination of quantitative restriction
principle of general relativity
principle of geometric reverse
principle of geophysical exploration
principle of good faith and honesty
principle of hard and soft acids and bases
principle of hard and soft acids and bases (HSAB principle)
principle of harmonic measure
principle of health maintenance with drugs
Principle of historical cost
principle of hyperbolic measure
principle of implicit measurement
principle of inclusion and exclusion
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