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crop germplasm resourceson-farm conservation
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crop germplasm resourceson-farm conservation
Encyclopedia
农学
作物种质资源农家保护
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crop germplasm resourceson-farm conservation
作物种质资源农家保护
由当地农民在自家农田和庭园延续种植各种作物品种,在这些品种得到世代流传的同时,也使其不断经历自然选择和人工选择的过程。又称农户保护。
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surface case
surface casing drilling technology
surface catalysis
surface catalytic reaction
surface channel
surface channel CCD
surface characteristics of crude drugs
surface characterization testing
surface charge
surface charge density
surface chemical physics and physical chemistry
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surface chemical shift
surface chemisorption
surface chemistry
surface cleaning
surface coating
surface coating of magnesium alloys
surface coating technology
surface collapse
surface color
surface color calibration
surface combatants
surface complexation
surface complexation model
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