摘要
探讨了田间条件下钢渣硅肥的用量和施用方法。结果表明:供试土壤的水浸态硅含量低于85mgkg-1,施用钢渣硅肥能够显著提高水稻的产量;依据产量和肥料用量关系的效应方程,除康平地区的碱性水稻土外,供试的其它地区比较合理的钢渣施用量为1500kghm-2;钢渣硅肥可明显提高水稻植株体内SiO2含量,根据水稻植株体内SiO2含量随钢渣硅肥施入量的变化情况,沈阳市康平县最佳的施入量也应为1500kghm-2,钢渣基施更有利于水稻对SiO2吸收和利用;钢渣硅肥对土壤pH值影响不大,钢渣硅肥具有一定的后效。
A field experiment was conducted to investigate slag-fertilization technique for rice Production. Slag-fertilizer could increase the yield of rice and SiO_2 content in rice significantly because the SiO_2 content extracted by water from paddy soils was under 85(mg kg^(-1)). Based on the functional relations between slag-fertilization rate and yield of rice and the SiO_2 content in rice, the rational slag-fertilization rate was 1500kg hm^(-2). Slag base fertilization was beneficial for rice to SiO_2 uptake. The effect of slag fertilization on pH of soils was insignificant, and slag fertilization could affect rice growth positively in next growing cropping season.
出处
《土壤通报》
CAS
CSCD
北大核心
2004年第3期327-330,共4页
Chinese Journal of Soil Science
基金
辽宁省科学技术基金项目(971068)
沈阳市科学技术青年基金项目资助
关键词
辽宁
水稻
硅肥
施用技术
钢渣硅肥
Slag fertilizer
Rational slag-fertilization rate
Fertilization method