摘要
选择黄棕壤、红壤、灰潮土和水稻土等湖北省四种主要土壤类型,对油菜和水稻分别进行盆栽和田间硫肥试验。试验结果表明:黄棕壤、红壤和灰潮土三种土壤盆栽油菜施用硫肥后,均能促进油菜的生长发育并增加油菜的干物重,但总体上施石膏的效应比施硫磺要好。水稻土田间水稻硫肥试验后,明显提高了水稻产量,但施硫磺粉的效果要比施石膏好,前者的增产率达到27.44%,后者是14.88%。试验前后土壤有效硫的变化进一步说明施用硫肥可以维持土壤硫素平衡,满足作物营养需求。使用澳大利亚KC l—40方法测定土壤有效硫含量,能反映土壤供硫水平与作物产量的相关性,这对于指导我国农业生产具有重要的意义。
Four representative soils, Brown soil, Red soil, Grey which the pot trial for rape and the field experiment for rice soil and Paddy soil were selected in Hubei Province, on were carried. There were four treatments on each soil, including control without nutrient addition （CK）, nutrients without S （NPK） , nutrients with elemental S （ NPK ＋ S）, and nutrients with CaSO4 （ NPK ＋ CaSO4 ）. And there were four replicates for each treatment. Soil-available S was tested using the technology of sulfur testing （ KCl - 40 method） from Australia. The result showed ： The pot trial of rape on Brown soil, Red soil and Grey soil respectively, that application of CaSO4 or elemental S accelerated growth of rape and increased their dry weight. And the effect of applying CaSO4 was better than thot of applying elemental S. The field experiment of paddy soil for rice, that the S fertilizer could increase rice yields, and the rate of increase production applying elemental S, which was 27.44%, better than applying CaSO4 ,which was 14.88%. It was necessary to fertilize S which can maintain the balance of S in soils, and meet the plants needed. It was showed that the KCl-40 method, which determined available S content in soils, could indicate the relationship between crop yield and the S - supplying ability of soils.
出处
《土壤通报》
CAS
CSCD
北大核心
2005年第5期720-722,共3页
Chinese Journal of Soil Science
基金
中澳合作项目7658号
广东省农业科技攻关项目(2003C20512)
广东省科学院优秀人才基金项目联合资助
关键词
土壤
硫肥
盆栽试验
田间试验
Soil
Sulphur fertilizer
Pot trial
Field experiment
