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哈萨克斯坦东南部有280万公顷侵蚀耕地.我所的多年试验表明,在山地暗栗钙土地带和5°以下坡地黑钙土地带,在翻耕
There are 2.8 million hectares of eroded arable land in southeastern Kazakhstan, and my years of experimentation have shown that in the areas of dark chestnut soil in the mountains and chernozem areas on sloping lands below 5 °,