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林木发育期观测
释义
林木发育期观测
Encyclopedia
农学
林木发育期观测
释
observation of developmental stages of trees
林木发育期观测
在地形、土壤、栽培水平一致的地段上,选取年龄长势相近、生长健壮的主要树木种类和品种,依据树木外部形态特征,按发育期出现顺序对各发育期出现日期进行观测和记录的活动。
随便看
theorem of impulse
theorem of independent trials
theorem of integral transformation
theorem of intermediate values
theorem of invariance
theorem of invariance of dimension
theorem of kinetic energy
theorem of linear order
theorem of linear ordering
theorem of maximum modulus
theorem of minimum entropy production
theorem of moment of momentum
theorem of momentum
theorem of motion of centre of mass
theorem of nested intervals
theorem of power of a circle
theorem of prime numbers
theorem of principal axes
theorem of proportion by addition
theorem of proportion by addition and subtraction
theorem of proportion by alternation
theorem of proportion by inversion
theorem of proportion by subtraction
theorem of ratio of equality
theorem of residues
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