陇东苹果园土壤浸提液对黑麦草和紫花苜蓿种子萌发及幼苗生长的影响

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Effect of soil extract from an apple orchard on ryegrass and alfalfa seed germination and seedling growth in eastern Gansu

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不同土层土壤浸提液对黑麦草和紫花苜蓿种子萌发率的影响