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当前位置: 首页 > 文章 > 秸秆还田量对水旱轮作作物产量和土壤肥力的影响 土壤通报 2017 (5) 1185-1191
Position: Home > Articles > Effect of Different Straw Incorporation Rates on Crops Yields and Soil Fertility in the Paddy-Upland Rotation System Chinese Journal of Soil Science 2017 (5) 1185-1191

秸秆还田量对水旱轮作作物产量和土壤肥力的影响

作  者：
白建忠;陈泽;丁永锋;张珞;赵营
单  位：
青铜峡市农业技术推广服务中心
关键词：
宁夏灌区;秸秆还田量;水旱轮作;春玉米;水稻;产量;土壤肥力
摘  要：
2013~2015年在宁夏灌区春玉米-水稻-春玉米轮作体系下,采用田间定位试验研究了0(S0)、2.25(S1)、3.75(S2)、5.25(S3)和6.75 t hm-2(S4)5个秸秆还田量对作物产量和土壤肥力的影响。结果表明,秸秆还田量对前两年作物产量无明显影响,持续还田3年才有显著的增产效果,S3处理最佳。秸秆还田降低了耕层土壤容重,其随着还田量增加呈显著降低趋势。秸秆还田量对2014年水稻种植前土壤有机质、全氮和速效钾含量有显著影响,而对其它不同时期土壤碱解氮、有效磷含量影响不大。秸秆还田对年际间土壤有机质提升并不呈叠加效应,且土壤有机质含量也不随秸秆还田量增加而同步增加,通常在S2或S3处理下最高。水稻季秸秆还田有利于土壤C/N比调节。各季作物产量与秸秆还田量都服从二次曲线关系(R2=0.602~0.880)。因此,在宁夏灌区年际间水旱轮作体系中,合理的秸秆还田量应控制在3.75~5.25 t hm-2之间,以达到作物增产和土壤培肥的双重目标。
译  名：
Effect of Different Straw Incorporation Rates on Crops Yields and Soil Fertility in the Paddy-Upland Rotation System
作  者：
BAI Jian-zhong;CHEN Zhe;DING Yong-feng;ZHANG Luo;ZHAO Ying;Agricultural Technology and Mechanization Extension and Service Center in Qing Tongxia City;Institute of Agricultural Resources and Environment, Ningxia Academy of Agriculture and Forestry Sciences;
单  位：
Agricultural Technology and Mechanization Extension and Service Center in Qing Tongxia City%Institute of Agricultural Resources and Environment, Ningxia Academy of Agriculture and Forestry Sciences
关键词：
Yellow River Irrigation Region of Ningxia;;Straw incorporation rates;;Paddy-upland rotation system;;Spring maize;;Paddy rice;;Yield;;Soil fertility
摘  要：
Under the rotation system of spring maize-paddy rice-spring maize from 2013 to 2015 in the Yellow River Irrigation Region of Ningxia, a short-term field location experiment was conducted to investigate the effect of five different straw incorporation rates of 0(S0), 2.25(S1), 3.75(S2), 5.25(S3), and 6.75 t hm-2(S4) on crops yields and soil fertility. The results indicated that straw incorporation rates had no significant effect on crops yields in the first two years, however, significant increasing in crop yield was found after three years of continuous straw incorporation, and the most obvious yield increment was found in treatment S3. Topsoil bulk density was significantly decreased with straw incorporation rates to soil. Straw incorporation rates had significant effect on the contents of soil organic matter,total nitrogen, soil available potassium before paddy rice growing in 2014, but there was no significant effect on the contents of soil available nitrogen and available phosphorus during the other different periods. Straw incorporation had no superimposed effect on soil organic matter improvement between years of 2013 to 2015. The contents of soil organic matter were not simultaneously increased with straw incorporation rates. The maximum content of soil organic matter was generally found in treatment S2 or S3. Straw incorporation in paddy rice season was benefit for regulating soil C/N ratio. The correlations between straw incorporation rates and crops yield could be described by the quadratic curves(R2= 0.602-0.880). Therefore, under the paddy-upland rotation system in the Yellow River Irrigation Region of Ningxia, the rational rates of straw incorporation was 3.75-5.25 t hm-2, which would achieve the double goals of crop yield increase and soil fertility improvement.

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