摘要
通过水稻盆栽试验研究了一种废水沉降底泥调制成的有机复肥对土壤养分的影响．结果表明，土壤中各种养分主要通过速效Ｎ，Ｐ，Ｋ及Ｏ．Ｍ．影响水稻产量，而复肥处理正是提高了土壤养分的有效性，从而使水稻增产．该有机废水沉降底泥有机复肥具有使土壤养分供应与作物需求之间的协调功效．该废水资源化产物为农业生产提供了一种新的有机肥源．
he content of organic matters in the organic wastewater was high.If the organic matters can be extracted effectively,it's very good to the environment.This not only could relax the crises of water resources to some extents owing to treatment of much wastewater,but also put the extracted organic matters into orgaic “resources treasury” in agriculture production.And the compound fertilizer,developed through the coagulative precipitating sludge and the addition of suitable chemical fertilizers,is a new kind of suitable chemical fertilizers,is a new kind of suitable fertilizer for the modern organic agriculture.The objectives of this study is to find the effect to the soil nutrients of a compound fertilizer,used the precipitated sludge from coagulation treatment of starch wastewater,through the rice pot experiment.The biological experiment using the prepared compound fertilizer showed that the major factors which affected the rice yield was AN,AP,AK and O.M.,in the soil macronutrients indexes.The analysis of soil nutrients indicated that available fractions of soil macronutrients were higher in the treatment of compound fertilizer than in other treatments,so its yield was higher,too.Total P and organic matter were also somewhat improved in the coagulative sludge treatment.These findings suggested that the compound fertilizer harmoniously integrated the supply of soil nutrients and demand of crops.So the product of wastwater reclamation provided a new source of organic fertilizer for agricultural production,it's valuable to apply and spread.
出处
《西南师范大学学报（自然科学版）》
CAS
CSCD
北大核心
1998年第4期472-475,共4页
Journal of Southwest China Normal University(Natural Science Edition)
关键词
废水底泥
有机复肥
土壤养分
wastewater sludge
organic Compound fertilizer
soil macronutrients
