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苗木分级
释义
苗木分级
Encyclopedia
农学
〔苗木培育〕
释
seedling gradation
苗木分级
对需要出圃的苗木按苗木质量标准进行等级划分。目的是使出圃苗达到国家规定标准,保证用壮苗造林,减少造林后的苗木分化现象,提高造林成活率和林木生长量。
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pastoral plants growth promoting rhizobacteria
pastoral plants pathogen fluorescent labeling
pastoral plants pathogen PCR detection
Pastoral Psychology
pastoral scenery
pastoral style
pastoral theology
past pointing
past-pointing
past pointing, past-pointing
Pastry War
Pasturage Office
pasture
pasture cultivation
pasture measure of soil and water conservation
pasture meteorology
pasture plants
pasture pumping implements
pasture range plants and forage fed fresh
pasture user
pasture water deficit
pasture water requirement
pasture water supply
pasturing and soiling forages
PAT
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