摘要： 本研究发现，有机肥猪粪、牛粪和腐熟玉米秸秆具有一定的提供锌、锰能力；石灰性土壤施有机肥能显著提高土壤锌、锰的有效性；有机肥对土壤中锌、锰具有一定的活化能力；锌肥与有机肥配施可降低土壤对锌肥的固定能力，提高锌肥的利用率。

关键词: 有机肥, 锌锰, 有效性, 活化, 固定

Abstract: The constant temperiture experiment and pot experiment have been conducted for studying effects of organic manure on Zn,Mn in soils.The main results are summaried as follows: 1 Pig manure,cow manure and corn straw are good fertilizers for providing plants with Zn and Mn nutrients.2 The application of organic manure can increase the availabilities of Zn and Mn in soils.The increase of DTPA Zn,Mn maily lie in two aspects:one is O.M.(organic manure) with DTPA-Zn,Mn,another is activation of O.M.on original non avilable Zn and Mn when incubation of O.M.with soils.Organic acids can eomplex or disolve Zn,change of soil redox can increase DTPA -Mn of soils 3 O.M.can increase the amount of absorbed Zn,Mn in plants and reduce the fixation of zinc fertilizer in soils.

Key words: Organic manure, Zn, Mn, Availability, Activation, Fixation

中图分类号: 

• S158