摘要
田间试验结果表明,有机肥料(马粪)与无机肥配合施用可以显著提高土壤的供磷水平.石灰性土壤无机磷组成以 Ca-P 为主,其中 Ca_2-P 是土壤有效磷库的主体;Ca_8-P 对土壤有效磷库起重要调节作用,AI-P 在供磷上也有一定意义.有机-无机肥配合施用能提高土壤速效磷,尤其是 Ca_2-P 和 Ca_(?)-P 的含量,降低土壤对磷的吸附,显著提高土壤微生物体磷(Biomass-P)和磷酸酶的活性。
The results from field experiments indicated that the application of orgnic manure andinorganic fertilzers in combination significantly increased the soil P-supplying level.Calcium phosphate Oc-curs in various forms in caleareous soils,Ca_2-P being the main componet in the soil available phosphatepool.Ca_8-P plays an important role in regulating the supply of soil available phosphate.Al-P and Fe-Phave also some effect in supplying phosphate for plant.The application of organic manure and inorganic fer-tilizers in combination can increase soil available phosphate level,Ca_2-P and Ca_8-P content and reduce thefixation of P by soil as well as significantly incrcase soil Bioss-P content and phosphatase activity.
出处
《南京农业大学学报》
CAS
CSCD
北大核心
1993年第4期36-42,共7页
Journal of Nanjing Agricultural University
基金
国家自然科基金
关键词
石灰性土壤
有机肥
无机肥
施肥
calcareous soils
fertilizer application
organic manure
inorganic fertilizers
phosphate supplying of soils
