宁波市北仑区耕地土壤肥力现状分析

对北仑区各乡镇(街道)土壤样品的分析测定结果表明,北仑区耕地土壤有机质含量较高,土壤速效养分有效磷总体过量,区域间存在很大的不平衡性;全区土壤酸化程度严重,土壤阳离子交换量普遍偏低,保肥能力差。同时,笔者提出了实施酸性土壤改良,降低土壤酸化程度;增施有机肥,培肥地力;推广应用测土配方施肥技术,提高肥料利用率;合理轮作提高土壤养分含量等措施。

Analysis on Current Status of Soil Fertility of Cultivated Land in Beilun District

The organic matter,available phosphorus,available potassium,cation exchange capacity,salts,pH and total nitrogen were investigated in cultivated land of the townships and urban sub-districts in Beilun district.The result showed that the soil was rich in organic content,but the available phosphorus was excessive in most of the soil and was in disequilibrium between districts.Most of the soils were seriously acidic and the cation exchange capacity was generally low,that’s led to poor capacity of nutrient.So different measures were carried out to improve soil,such as ameliorate acid soil to low soil acidification,increase the organism fertilizer to increase soil fertility,extend equilibrium fertilization technology to improve fertilizer availability ratio,and by implementing proper rotation of crops to improve soil fertility.