【摘要】 采用二次正交旋转设计，利用数学模型方法，定量地分析了农肥、化肥和秸秆还田对土壤有机质含量的影响及其相互间的作用；农肥、化肥和秸秆的贡献率分别为１．６３，０和１．４１．在９５％的置信区间，维持土壤有机质在４％～５．５％的定量调控措施为：农肥、化肥和秸秆的年施入量分别是１０．６～１３．７ｔ／ｈｍ２、０．４５～０．５７ｔ／ｈｍ２和１．０５～１．３６ｔ／ｈｍ２．更多还原

【Abstract】 Using the mathematical model and the design of quadratic rotation regresslon,the effect of farm manure,chemical fcrtilizer and straw manure on soil OM content and their niteraction were quantitatively analysed.The contribution rates of farm manure,chemical fer tilizer and straw manure are1.63,0 and1.41 respectively.In order to maintain the soil OM at 4% to 5.5% under 95% confidence interval the amounts of manure,fertilizer and straw ap plied should be 10.6 to 13.7,0.45 to 0.57 and 1.05 to1.36 t/hm2,respectively.更多还原