农业科学研究2024，Vol.45Issue(2)：43-50,8.
小麦和玉米秸秆全量还田替代化肥潜力测算
Potential of Replacing Synthetic Fertilizer under Wheat and Corn Straw Returning in Shandong Province
摘要
Abstract
Shandong is a major grain-producing province in China.Evaluating the nutrient resources of wheat and corn straw and their potential for replacing synthetic fertilizers through full straw incorporation can provide effective reference for the reasonable use of straw nutrients and reducing synthetic fertilizer application.Based on data from the 2019-2021 Shandong Statistical Yearbooks and relevant literature,this study estimated the sown area,straw yield,nutrient resources of straw,and the potential of straw incorporation for fertilizer substitution in different cities of Shandong Province.The results showed that from 2019 to 2021,the average annual sown area of wheat and corn in Shandong Province was 3.976 7 million hectares and 3.871 5 million hectares,respectively.The average annual straw yield was 34.654 3 million tons for wheat and 31.658 0 million tons for corn.The average annual nutrient resources from wheat straw were 112 900 tons of nitrogen,39 400 tons of phosphorus,and 392 100 tons of potassium,while those from corn straw were 157 400 tons of nitrogen,79 400 tons of phosphorus,and 381 600 tons of potassium.Full straw incorporation could replace an average of 28.38 kg/hm2 of nitrogen,9.90 kg/hm2 of phosphorus,and 98.59 kg/hm2 of potassium for wheat straw,and 40.65 kg/hm2 of nitrogen,20.51 kg/hm2 of phosphorus,and 98.57 kg/hm2 of potassium for corn straw.The nutrient resources from wheat and corn straw in Shandong Province are substantial,and their effective utilization is crucial for reducing synthetic fertilizer usage.关键词
小麦、玉米秸秆/秸秆还田/化肥替代Key words
wheat and corn straw/straw incorporation/synthetic fertilizers substitution分类
农业科技引用本文复制引用
葛新成,冯尚宗,顾召帅,曹荣利,赵桂涛,黄琨,周伟..小麦和玉米秸秆全量还田替代化肥潜力测算[J].农业科学研究,2024,45(2):43-50,8.基金项目
山东省农业重大技术协同推广计划项目"玉米绿色高效生产模式构建与示范推广"(SDNYXTTG-2023-35) （SDNYXTTG-2023-35）
