摘要
采用长期定位和盆栽试验,研究了在有机无机肥配施下,紫色水稻土中各种形态磷的变化及对水稻产量的影响。结果表明,配施处理土壤供磷能力提高,有效磷增加,近年来虽未施磷肥,水稻产量仍接近或超过化肥处理。本文还研究了紫色水稻土无机磷各组分的变化规律和有效磷增加的原因及有机磷四种不同活性的组分。
Located and pot experiments were carried out to study the changes of different phosphorus forms and their effect on rice yield, in purple paddy soils under the conditions of combined application of organic manure and chemical fertilizers. The results showed that the properties of phosphorus supply in the soil had beed improved, the content of total and available P had markedly increased in comparision with those with application of chemical fertilizers alone. In recent years, the average yield of rice has been at about the same level or as exceeded that with fertilizer application although no addtional phosphatic fertilizer was applied. The patterns of the changes in the components of inorganic P in purple paddy soils, the causes for the increase in available P and the four components of organic P with different activity are also discussed.
出处
《西南农业大学学报（自然科学版）》
CSCD
1990年第6期652-658,共7页
Journal of Southwest Agricultural University
基金
农业部"七五"项目中"有机肥改土作用与供肥机制"专题研究之一
关键词
水稻土
磷
转化
有机肥
化肥
配施
organic manure
purple paddy soil
phosphorus/chemical fertilizer
transformation
