Clean-cultivation reduces vole survival and reproduction.
无覆盖耕作可减少田鼠的存活和繁殖.
Permanent grass has a number of advantages over clean cultivation , the system It'superseded.
多年生牧草较之已被其取代的清耕有许多优越性.
The results showed that the clean area of factory cultivation of Flammulina velutipes ( cooling chamber, inoculation room, culture room) were higher cleanliness level in the test period.
结果表明:在检测期间,金针菇工厂化栽培各净化区域(冷却室、接种室、培养室)洁净程度均较高。
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