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当前位置: 首页 > 文章 > 秸秆还田配施钾肥对稻-油轮作产量及土壤团聚体钾分布的影响 长江大学学报(自科版)农学卷 2019 (9) 71-78+8
Position: Home > Articles > Effect of Straw Returning and K Fertilizer Application in Yield of Rice-oilseed Rape Rotation and K Distribution in Soil Aggregates Journal of Yangtze University(Natural Science Edition)Agricultural Science Volumn 2019 (9) 71-78+8

秸秆还田配施钾肥对稻-油轮作产量及土壤团聚体钾分布的影响

作  者：
陈凤;刘莉;潘晨;王雨晴;李燕丽;邹家龙;李继福
单  位：
湿地生态与农业利用教育部工程研究中心(长江大学)
关键词：
秸秆还田;稻-油轮作;产量;团聚体;速效钾
摘  要：
基于2011年稻-油轮作田间定位试验,研究了长期秸秆还田配施钾肥对作物产量、耕层速效钾含量、水溶钾含量和土壤团聚体分布及其速效钾含量的影响,以评估各土层团聚体中速效钾的平衡状况。研究共选取其中4个处理,分别为:不施钾(-K)、钾肥施用(+K)、秸杆还田(+S)、秸杆还田配施钾肥(S+K),其中K和S分别表示钾肥施用和秸秆还田。结果表明,与不施钾处理相比,长期秸秆还田配施钾肥可显著提高水稻和冬油菜产量,且增产效果表现出一定差异,水稻季增产效果为秸秆还田配施钾肥(S+K)>钾肥施用(+K)>秸秆还田(+S)>不施钾(-K),油菜季则为秸秆还田配施钾肥(S+K)>秸秆还田(+S)>钾肥施用(+K)>不施钾(-K);连续秸秆还田(+S)或者钾肥施用(+K)可不同程度地改善各土层团聚体分布、提高团聚体速效钾含量,尤以<0.25mm粒径最为明显;随着轮作年限的延长和作物籽粒钾素收获,与初始值相比,表层土壤速效钾含量持续下降,秸秆还田配施钾肥(S+K)可弥补钾素亏缺并提高各粒径土壤团聚体速效钾含量,维持土壤供钾能力。
译  名：
Effect of Straw Returning and K Fertilizer Application in Yield of Rice-oilseed Rape Rotation and K Distribution in Soil Aggregates
作  者：
Chen Feng;Liu Li;Pan Chen;Wang Yuqing;Li Yanli;Zou Jialong;Li Jifu;Engineering Research Center of Ecology and Agricultural Use of Wetland,Ministry of Education (Yangtze University);College of Agronomy,Yangtze University;Agricultural Technology and Promotion Service Center of Jingzhou City;
关键词：
straw returning;;rice-oilseed rape rotation;;yield;;aggregate;;available K
摘  要：
The effects of long-term straw returning with potassium(K) fertilizer application on crop yield, available K content, water-soluble K content, soil aggregate distribution and its available K content are studied to evaluate the soil K balance from 2011 to 2018. Four treatments are selected, namely: CK(-K),+K,+S and S+K, where K and S denote K fertilizer application and crop residue incorporation, respectively. The results show that compared with-K treatment, long-term straw returning with K fertilizer(S+K) can significantly increase the yield of rice and winter oilseed rape. The yield increase shows some differences, in the rice season it is S+K>+K>+S>-K, and in the rapeseed season is S+K>+S>+K>-K. Continuous straw returning or K fertilizer application can improve the distribution of agglomerates in various soil layers and increase the available K content of aggregates, especially the particle size < 0.25 mm is the most obvious. With the extension of rotation and the harvesting of K in crops, the available K content in the surface soil continues to decrease compared with the initial value. Applying straw with K fertilizer can compensate for the K deficiency and increase the available K of soil aggregates to maintain the ability of soil K supply.

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