reduce sub-soil compaction
...gation) through livestock manure application通过增施农家肥改良土壤结构（团粒性） Reduce sub-soil compaction减少土壤压实 The above measures may also lead to increases in soil organic matter (SOM) content, the heart of soil productivity通过采...
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reduce sub-soil compaction
减少底土压实
以上为机器翻译结果，长、整句建议使用 人工翻译 。