Through the intercropping of poplar with legume, arbors and shrubs and the rotational cropping of poplar, the effects of different treatments on the soil nutrient elements and the forest land productivity were studied quantitatively.

  • 通过杨树与豆科乔、灌木树种混交以及轮作等生物措施,定量研究不同处理对土壤营养元素和林地生产力的影响。

  • 互联网摘选 2025-01-19 23:47:16

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