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However, before 1994, per farming capita income obstacle had been relatively serious and thus taken as the main obstacle factor.
在1994年之前，农民人均收入障碍度较大，是主要的障碍因素。
The soil obstacle factor, the critical values of some nutrients and the supply intensity, as well as fertilizer efficiency should be paid more attention in formula fertilization by soil testing.
测土配方施肥中，还应注意：土壤障碍因子、某种元素临界法与供应强度，肥料利用率等问题。
So we thought the bad environment caused by overcrowded carriage was the important factor which induced spirit obstacle, among the passengers.
严重超员造成的旅行环境恶化是诱发旅客精神障碍的重要因素。
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