【作者】 徐培智； 解开治； 陈建生； 杨少海； 张发宝； 唐拴虎； 黄旭； 顾文杰；

【Author】 Xu Peizhi Xie KaiZhi Chen Jiansheng Yang Shaohai Zhang Fabao Tang Shuanhu Huang Xu Gu Wenjie (Guangdong Key Laboratory of Nutrient Cycling and Farmland Conservation,Soil and Fertilizer Research Institute,Guangdong Academy of Agricultural Sciences,Guangzhou 510640,China)

【机构】 广东省农科院土壤肥料研究所/广东省养分资源循环利用与耕地保育重点实验室；

【摘要】 以大田试验研究了稻秆还田配伍不同促腐剂对稻田土壤速效养分、有机质和pH动态变化以及水稻产量的影响,以探讨可持续发展的稻秆还田模式。结果表明,与无稻秆还田处理比较,稻秆还田土壤速效磷、速效钾的含量平均分别增加4.5mg kg^-1和3.6mg kg^-1,土壤有机质平均提高1.2g kg^-1。不同稻秆还田处理之间,配伍不同促腐剂土壤速效磷、速效钾的含量增加0.9～9.0mg kg^-1和11.1～52.3mg kg^-1,其中尤以稻秆还田+有机氮处理最佳。同时稻秆还田配伍不同促腐剂可调控土壤碱解氮的含量,加速土壤中有机质分解速度,利于植物更好的吸收养分,提高作物产量。稻秆还田处理、稻秆还田+有机氮处理、稻秆还田+石灰处理、稻秆还田+碳铵处理水稻产量较CK处理分别增产21.0kg（667m²）^-1、40.7kg（667m²）^-1、52.9kg（667m²）^-1、59.9kg（667m²）^-1,平均增产率达到11.2%,增产效果达到显著水平。更多还原

【Abstract】 Returning crop stalks to the field with deferent promoter of compost had influence on the soil rapid available nutrient,the organic matter,changes of pH and rice yield of paddy rice,discusses the sustainable development of returning crop stalks to the field.Results showed that rapid available phosphorus group and rapid available kalium group increased 4.5mg kg^-1 and 3.6mg kg^-1,the organic matter increased 1.2g kg^-1 a compared with only crop stalks group.Different crops stalks accompany with different promoter of compost could increased content of rapid available phosphorus and rapid available kalium,9～9.0mg kg^-1 and 11.1～52.3mg kg^-1. Furthermore,the organic nitrogen group performed best in this experiment.At the meanwhile,different promoter of compost could change the content of alkali-hydrolysable nitrogen,accelerate the Degradation of organic matters,and promote absorption of nutrient and increased rice yield of crops.The increased rice yield of paddy rice contained only crop stalks group,crop stalks + organic nitrogen group,crop stalks + lime group,crop stalks + NH HCO group were 1.0kg（667m²）^-1、40.7kg（667m²）^-1、52.9kg（667m²）^-1、59.9kg（667m²）^-1,average value was 11.2%,he production increase effect achieves the remarkable level.更多还原