由含钛高炉渣合成复合肥料及甜菜栽培实验研究

Synthesis of Compound Fertilizer from Titanium-Bearing Blast Furnace Slag and Cultivation Experimental Study on Sugar Beet

以含钛高炉渣为原料,采用加热法制备肥料,以提高其溶解性能,使其中的营养元素转化为易被植物吸收利用的形式,并通过栽培实验研究了肥料对甜菜性状、产量、含糖率和大量元素含量的影响.结果表明,炉渣中Mg,Ti,Fe的溶出率分别为88%,84%和75%,肥料中可被植物有效利用的元素有氮、硅、硫、钙、镁、铁和钛.该肥料可以使甜菜的株高、块根长度、叶片鲜重和叶绿素含量明显增加;使甜菜亩产量增加22.03%,含糖率增加15.57%,亩产糖量增加41.03%,说明该肥料对甜菜的生长有促进作用.

Compound fertilizer was synthesized with titanium-bearing blast furnace slag as a major raw material by heating method.Its solubility was enhanced so that the nutritional elements transform into the form which can be absorbed easily by plants.The effects of fertilizer on the character,yield,sugar content and nutritional elements of sugar beet were investigated by cultivation experiment.The results show that the dissolution rates of titanium,magnesium and iron from slag are 84%,88% and 75% respectively.The fertilizer contains such nutritional elements as nitrogen,silica,sulfur,calcium,iron,titanium and magnesium,which can all be absorbed effectively by nurture plants.The fertilizer can increase significantly the plant height,root length,leaf weight and the chlorophyll content of sugar beet.The yield of sugar beet is increased by 22.03%,and its sugar content is increased by 15.57%,leading to a sugar yield increase of 41.03%.All these indicate that the fertilizer can promote the growth of sugar beet.