松辽平原玉米带
Songliao plain corn belt
以上为机器翻译结果,长、整句建议使用 人工翻译 。
通过田间调查和土壤肥力指标分析,探讨了松辽平原玉米带黑土肥力退化的原因和机理。
Through field investigation and soil fertility index analysis, causes and mechanism of fertility degradation of black soil in the Songliao Plain were explored.
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