摘要
生物灰渣是生物质燃烧产生的固体废弃物,含有大量的磷、钾等植物营养元素。用盆栽试验方法探讨了灰渣对小白菜生长和酸性土壤的改良作用,结果表明,生物灰渣呈强碱性,pH值高达10.00;全P、全K含量分别为7.00g/kg和12.82g/kg,速效P、K含量高;灰渣与化肥的混合施用能明显增加小白菜的鲜重,显著提高其产量和叶片的P、K含量,改善小白菜的品质;灰渣含有的养分可以替代部分化肥,但缺乏氮素,与氮肥配施时更有利于小白菜的生长。同时,该灰渣的施用,可明显提高土壤pH值,补充土壤速效P、K养分,改良酸性土壤。
Pot culture was used in the experiment to study the effects of different amount of plant-fly-ash and chemical fertilizers on the growth and quality of the Brassica chinensis, and the amendment to the acid soil. The results showed that combined application of plant-fly-ash and chemical fertilizers could significantly increase the fresh-weight and production of the vegetable, and improve the quality of the Brassica chinensis through increasing the content of P, K and vitamin C. Because high pH of the plant-fly-ash and the contents of available P and K, its application could obviously increase the soil pH and replenish the available P and K nutrient of soil.
出处
《湖北农业科学》
北大核心
2010年第4期822-825,共4页
Hubei Agricultural Sciences
基金
华中农业大学大学生科技创新基金项目(2009-A107)
关键词
灰渣
小白菜
酸性土壤改良
plant-fly-ash
Brassica chinensis
acid soil amendment
