Its cultural experiments at many plots have shown that the temperature and the fertility of soil are limiting-factors for its growth.
本文通过多点栽培试验表明，影响新银合欢生长的限制因子是温度和土壤肥力。
In Huaibei area the unsuitable application of wheat variety, bad climate soil conditions, lower fertility and extensive cultivation were major limiting factors for high wheat yield in large areas.
对近几年淮北小麦生产现状的分析表明，小麦品种使用不当、不良气候、土壤肥力偏低以及栽培粗放是当前淮北小麦大面积生产存在的主要问题。
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