为了有效地进行草地蝗虫的防治，必须摸清其生长和繁殖与生态环境条件的关系。
For effective control of grasshoppers, it is essential to clarify the relationship between the growing and reproduction of grasshoppers and the ecological environment they live in.
通过对银杏单叶芽和丛状叶芽扦插的试验研究，探索出适宜于银杏叶芽生根的生态环境条件。
In this paper the suitable ecological conditions for the leaf bud of ginkgo to take roots are probed by the cuttage test of simple and fascicular leaf buds of ginkgo.
同时对具有显著性的方程序进行单因子边际分析，结合实际观测样本获得了家畜生长的最适宜生态环境条件。
Meanwhile, carrying on single factor bound analysis to the equation which had significance, combining practice, observing the most suitable ecology conditions which the domestic animal growing in.
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