土壤生产力

福建省粮食作物气候-土壤生产力及人口承载量的研究

watering arrangement with perforated pipe-line located above the soil

soil working agriculture, forestry

soil dilution plating technique

brown steppe soil

soil and water conservation tillage measures

humus-calcic pseudogleyed soil

crust soil

SHOVELS for agricultural soil-working