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当前位置: 首页 > 文章 > 水旱轮作条件下稻麦秸秆腐解规律研究 山东农业科学 2019 (8) 75-78
Position: Home > Articles > Study on Decomposition Law of Rice and Wheat Straw in Paddy-Cereal Rotation Mode Shandong Agricultural Sciences 2019 (8) 75-78

水旱轮作条件下稻麦秸秆腐解规律研究

作  者：
信彩云;马惠;王瑜;赵庆雷;刘奇华;杨军;陈博聪;李景岭;林香青
单  位：
山东省水稻研究所/山东省水稻工程技术研究中心
关键词：
水旱轮作;稻麦秸秆;腐解规律;养分
摘  要：
为探明水稻-小麦轮作条件下稻麦秸秆还田后的腐解规律,对水稻小麦秸秆还田后不同时期的秸秆残余率和氮、磷、钾、纤维素、半纤维素、木质素的累积释放率及平均释放速率进行研究。结果表明,经过腐解(水稻秸杆210天、小麦秸杆120天),水稻和小麦秸秆最终65%以上已腐解;水稻秸秆中氮、磷、钾、纤维素、半纤维素、木质素分别释放60.95%、6.77%、90.58%、38.77%、9.04%、30.97%;小麦秸秆中氮、磷、钾、纤维素、半纤维素、木质素分别释放24.94%、22.01%、93.64%、25.39%、24.19%、39.13%。稻麦秸秆中钾的累积释放率最高,均超过90%。水稻和小麦秸秆中磷的平均释放速率变化不大,氮和钾的平均释放速率高峰均出现在前期,腐解后期呈降低趋势;纤维素、半纤维素、木质素的平均释放速率要高于氮磷钾元素。
译  名：
Study on Decomposition Law of Rice and Wheat Straw in Paddy-Cereal Rotation Mode
作  者：
Xin Caiyun;Ma Hui;Wang Yu;Zhao Qinglei;Liu Qihua;Yang Jun;Chen Bocong;Li Jingling;Lin Xiangqing;Shandong Rice Research Institute/Shandong Rice Engineering Technology Research Center;
关键词：
Paddy-cereal rotation;;Rice and wheat straw;;Decomposition law;;Nutrient
摘  要：
This study was aimed to investigate the decomposition law of rice and wheat straw under the condition of paddy-cereal rotation. The residual rates of straw and the cumulative release rates and average release rates of nitrogen, phosphorus, potassium, cellulose, hemicellulose and lignin of rice straw and wheat straw in different periods were analyzed. The results showed that more than 65% of straw were decomposed when the decomposing time was 210 days for rice straw and 120 days for wheat straw. The cumulative release rates of nitrogen, phosphorus, potassium, cellulose, hemicellulose and lignin of rice straw were 60.95%, 6.77%, 90.58%, 38.77%, 9.04% and 30.97%, respectively,and those of wheat straw were 24.94%, 22.01%, 93.64%, 25.39%, 24.19% and 39.13%, respectively. The cumulative release rate of potassium in rice and wheat straw were the highest and exceeded 90%. The average release rate of phosphorus in rice and wheat straw did not change significantly, and the peak of nitrogen and potassium release rate appeared at early stage, and decreased at late stage of decomposition, and the average release rates of cellulose, hemicellulose and lignin were higher than those of nitrogen, phosphorus and potassium.

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