棉秆还田对土壤生态环境的影响

Effect of Cotton Stalk as Manure on the Physical and Chemical Property of Soil

采用田间试验、现场调查等方法进行了棉秆还田对比试验。结果表明:棉秆还田能降低土壤容重、硬度和耕层土壤含水量,提高土壤总孔度和通气孔隙度,可增加土壤速效养分含量。

The experiment incotton stalk as menure was made. qhe result showed that the field fertilized with cotton stalk as manure with a quantity of 4 500 kg/hm^2 could maintain its normal OM level. Cotton stalk manure could decrea. the soil bulk density, the soil hardness and the soil water content, and increase the whole porosity of the soil, the gascous porosity and the effective elements content. Practically, the cotton stalk could be put into the soil with no grinding.