土壤保持 SCS Soil Conservation ; soil conservancy ; earth conservancy

土壤保持措施 soil conservation measure ; [土壤] soil conservation practice

保土土壤保持 soil conservation

土壤保持局 Soil Conservation service

土壤保持区 [土壤] soil conservation district

土壤保持推广 soil conservation extension

土壤保持法 Soil Conservation Act

土壤保持耕作 Soil conservation tillage