黄河淤背区济南段土地主要养分与理化性状浅析

近年来,淤背区土地开发利用作为一项经济产业发展迅猛,但经济效益不高等问题依然十分突出。对黄河济南段部分淤背区主要养分与理化性状进行的调查研究表明,在相距40 km范围内,淤背区的土壤质地、肥力以及水分涵养等各项指标距农田指标相差甚远,土地质量较差,覆土层厚度均小于45 cm,有机质、水解氮、有效磷、速效钾平均含量分别为6.2、18.13、2.05、119.95 mg/kg,微量元素普遍匮乏。必须加厚壤土层,并通过生物措施和工程措施对新生地进行较长期的改良,培肥地力,才能逐步改造成良田。

Analysis of Primary Nutrients and Physical and Chemical Properties in Sludge Soil Dredged Area of The Yellow River in Jinan

The exploitation of sludge soil dredged area as an industry developed rapidly these years.However,the problem of low economic benefit was still prominent.The study on soil primary nutrients and physical and chemical properties in sludge soil dredged area of The Yellow River in Jinan was carried out and the results showed that in range of more than 40 kilometers,the texture,fertility,water content of sludge soil dredged area were far below those of farmland.The thickness of overburden was less than 45 cm,and the average content of organic matter,hydrolysable nitrogen,available phosphorus,available potassium were 6.2,18.13,2.05,119.95 mg/kg respectively with the general lack of microelements.Hence,the soil was in poor quality.In order to improve the soil quality,some measures such as thickening the loam soil layer and increasing soil fertility must be done through biological and engineering methods.