1) pure artificial even aged stand
人工同龄纯林
1.
The rectangle and isosceles triangle are two main kinds of arrangement of pure artificial even aged stand,according to correlative relationship between crown area and forest area of pure artificial even aged stand theoretical canopy density of stand between different row and intertree space are inferred and calculated.
通过人工同龄纯林树冠面积与林地面积的相关比例关系，推导、计算出人工同龄纯林林木品字形排列（等腰三角形）和矩形排列，且株行距不同的林分理论郁闭度。
2) Even_aged plantation
同龄人工林
3) even aged stand
同龄纯林
1.
The square average diameter cumulative percent ( SADCP ) of even aged stand complied with normal distribution is experientially between 55% and 64% on diameter cumulative curve.
对于直径遵从正态分布的同龄纯林 ,通常只从经验上判定其平方平均直径在株数累积分布曲线上的位置介于 5 5 %～ 6 4%之间 。
4) evenaged pure forest system
同龄纯林系统
5) artificial pure forest
人工纯林
1.
Old or many times regenerated artificial pure forest will lead to imbalance of nutrients and degeneration of its soil due to the trees selective absorption and utilization of nutrients.
引进更新树种并形成混交林是改造人工纯林、避免因长期连栽而导致土壤退化的最优途径,而混交能否成功的关键是树种之间的关系是否协调。
2.
The results showed that the microorganisms in the four artificial pure forests of Qinling Mountains were of great difference in the total quantity.
本文对秦岭厚畛子地区日本落叶松(l)、油松(y)、灰楸(q)和锐齿栎(r)四种人工纯林林地土壤中细菌、真菌和放线菌群落及分布特征进行了研究。
6) Middle-young aged plantation
人工中幼龄林
补充资料：人工受精与人工授精
人工受精与人工授精
artificial fertilization and artificial insemination
我国学者把“人工受精”与“人工授精”两名词区别开来：前者指人工体外受精而言，后者指把精液注入到妇女的阴道或宫颈管、宫腔内，使精、卵在体内相遇。人卵体外受精与胚胎移植后出生的婴儿俗称试管婴儿。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条