常見例句雙語例句The clone's genetic train is the basic factor affecting seed production and quality of Chinese fir seed orchard.無性系遺傳特性（即生物因子）是影響種子園産量的基礎(chǔ)條件；The mathematical model is established on the basis of the relation between the number and the production of male and female flowers of parents in seed orchard.根據(jù)種子園親本數(shù)目與雌、雄球花産量的關(guān)系，建立數(shù)學模型，提出了一種評價種子園各親本配子貢獻的數(shù)量方法——平衡指數(shù)法。So it is possible to establish clonal seed orchard as the base of high quality seed production through selecting elite straight grain individual plant (superior tree).故可以通過選擇優(yōu)良的直紋單株（優(yōu)樹）建立無性系種子園，作爲良種生産的基地。 返回 seed production orchard