soil fertility factor

Abiotrophy resulted from soil fertility inadequacy was a main limiting factor for the growth and development of apple trees in this region.

不施肥或施肥不足，则成为影响红富士幼树生长、发育和早实性的主要限制因子。

It is an important factor to hinder the aerially seeded Pinus massoniana stands in Hunan Province from growing and maturing that its stand soil fertility has been quite low for a long time.

湖南省马尾松飞播林林地土壤肥力低下是制约其林分生长和发育的重要因素。

Study on the relationship between soil fertility properties and species diversity in grass layer showed that the main factor affecting species diversity was soil PH, then was the soil total phosphorus.

对防护林草本层物种多样性指数与土壤肥力因子的关系研究表明：影响草本层物种多样性的主要因子是土壤PH值，其次是土壤全磷含量。