以下为句子列表：
英文: They concluded that the farmers' soybean yield gap were due to low quality seed, no application of herbicide, chemical fertilizer, coupled with inadequate available P in soil and poor production technology.
中文: 他们指出农民大豆产量差距是由不良种子、不使用除草剂、化肥、土壤有效磷不足和生产技术不良造成的。
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