甘薯地不同施肥处理不同土层土壤理化性质研究

Study on Soil Physicochemical Properties of Different Soil Fertilization Treatments in Sweet Potato Field

为了弄清不同有机肥对不同土层土壤理化性质的影响,研究了甘薯地不同施肥处理下不同土层土壤容重、全氮、硝态氮、速效磷、全钾含量的变化。结果表明,随着土层的加深,土壤容重总体上呈增加趋势,0~10 cm土层土壤容重以牛粪处理最低,10~30 cm土层以CF处理最低;0~30 cm土层牛粪处理土壤全氮最高,30~60 cm土层鸡粪处理全氮最高;0~20 cm土层鸡粪处理土壤硝态氮含量最高,20~30 cm土层猪粪处理硝态氮含量最高,30~60 cm土层CF处理硝态氮含量最高;随着土层的加深,土壤速效磷含量总体上呈降低趋势,0~10 cm土层土壤速效磷以鸡粪处理最高,10~60 cm土层以猪粪处理最高;随着土层的加深,土壤全钾含量总体上呈增加趋势,0~30 cm土层鸡粪处理全钾含量最高,30~60 cm土层猪粪处理全钾含量最高。

Changes of soil bulk density,total nitrogen,nitrate nitrogen,available phosphorus and total potassium in different soil layers of sweet potato field under different fertilization treatments were studied to investigate the effects of different organic fertilizer on different soil physical and chemical properties.The result showed that the soil bulk density increased with the soil layer deeper.The soil bulk density of cow dung treatment was lowest in 0-10 cm layer.The soil bulk density of CF treatment was lowest in 10-30 cm layer.The total nitrogen of cow dung treatment was highest in 0-30 cm layers.The total nitrogen of chicken manure treatment was highest in 30-60 cm layers.The nitrate nitrogen of chicken manure treatment was highest in 0-20 cm layers.The nitrate nitrogen of pig manure treatment was highest in 20-30 cm layers.The nitrate nitrogen of CF treatment was highest in 30-60 cm layers.Along with the deepening of soil layers available phosphorus showed a trend of lower overall.The available phosphorus of chicken manure treatment was highest in 0-10 cm layers.The available phosphorus of pig manure treatment was highest in 10-60 cm layers.Along with the deepening of soil layers total potassium showed a trend of higher overall.The total potassium of chicken manure treatment was highest in 0-30 cm layers.The total potassium of pig manure treatment was highest in 30-60 cm layers.