光照强度是最重要的环境因素。
生殖生长期间的光照强度是决定大豆产量的关键环境因素。
Light intensity during the reproductive period is the key environmental factor determining soybean yield.
也可以利用环境因素，如温度，光照，湿度，大气，空气流通，来防治害虫。
Environmental factors, such as temperature, light, humidity, atmosphere, and air circulation, may be used to prevent pests.
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