课程包括植物生物学，肥料和杀虫剂的化工制造，树木和灌木的辨识，水土保持及相关研究。
Courses include plant biology, the chemistry of fertilizers and pesticides, identification of trees and shrubs, soil conservation, and related studies.
结果表明：土壤物理、化学、生物学性质的恶化是长春市街路树木病虫害严重发生的主要原因。
Result shows that the main reason for serious occurrence of pest and disease on street afforestation trees is the deteriorating of the physic-chemical and biological properties of soil.
就我来说，我攻读生物学的时候，曾经试图组建一个新的树木的科系，尽管最后那就仅仅只是个尝试而已，没有得到任何结论。
I, when studying biology, had tried to produce a newfamily of a tree though it was just a try and nothing resulted.
就我来说，我攻读生物学的时候，曾经试图组建一个新的树木的科系，尽管最后那就仅仅只是个尝试而已，没有得到任何结论。
I, when studying biology, had tried to produce a newfamily of a tree though it was just a try and nothing resulted.
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