有机肥对设施菜地土壤磷素状况的影响  

Effect of Organic Manure on the Status of Phosphorus in Greenhouse Soils

作　　者：王婷婷[1,2] 王俊[1,2] 赵牧秋[1] 孟凡祥[1] 史奕[1] 陈欣[1] 

机构地区：[1]中国科学院沈阳应用生态研究所,辽宁沈阳110016 [2]中国科学院研究生院,北京100039

出　　处：《土壤通报》2011年第1期132-135,共4页Chinese Journal of Soil Science

基　　金：国家自然科学基金项目(30970479);国家科技支撑计划项目(2006BAD17B07)

摘　　要：以辽宁沈阳市郊某设施菜地土壤为研究对象,通过设置不同有机肥用量处理(0,20,60thm-2)的小区实验,系统研究不同有机肥处理对不同本底肥力设施菜地土壤全磷、速效磷含量变化的影响。研究结果表明,有机肥能够提高不同肥力设施菜地土壤0～20cm土层全磷含量,其中P1全磷含量与CK相比增加2.7～19.5%,P2增加7.6～33.6%。土壤0～20cm速效磷含量也随有机肥施用量的增加而明显增加,P2即有机肥施用量60thm-2时,不同肥力设施菜地土壤在黄瓜拉秧期速效磷含量与CK、P1之间均达显著差异(P<0.05)。本实验条件下,施用有机肥20thm-2,可保持施肥当季中肥力与高肥力设施菜地土壤磷素水平;当地常规有机肥施用量60thm-2可显著提高设施菜地土壤全磷与速效磷含量,从而加剧高肥力土壤磷素的累积,并对环境造成压力。A field plot experiment was conducted in Shenyang suburb to study the effects of applying organic manure on the status of phosphorus in greenhouse soils.Three treatments（0,20,and 60 t hm-1 of organic manure） were installed in greenhouse fields with different soil fertility levels.The results showed that the contents of total P,available P in 0-20 cm soil layer increased with applying organic manure,being significant when the application rate was 60 t hm-1,while that in 20-40 cm soil layer had no significant difference among the treatments.Under the application of organic manure,the available P content in 0-20 cm soil layer increased before the stage of flowering and decreased then,while that in 20-40cm soil layer increased gradually from the beginning to fruiting stage.Applying 20 t hm-2 of organic manure could maintain the soil total P and available P level in middle fertility level and high fertility field,while higher application rates could induce the risk of soil P leaching.

关 键 词：设施菜地 不同土壤肥力 有机肥 磷 

分 类 号：S626[农业科学—园艺学] S153.61