麦稻轮作区周年耕作模式对作物产量和土壤特性的影响

2004—2009年，在成都平原麦稻轮作区研究了不同周年耕作模式（周年翻耕无秸秆还田、小麦免耕稻草覆盖还田＋水稻旋耕无秸秆还田、麦稻周年免耕秸秆全量还田、麦稻周年垄作免耕秸秆全量还田）对作物产量和土壤特性的影响。结果表明，不同模式问小麦产量差异较小，水稻产量差异较大；免旋结合稻草覆盖还田模武年际闻水稻产量较其他模式稳定。麦稻关键生育阶段0-30cm土层速效养分含量模式间差异较小；免旋结合稻草覆盖利于土壤表层有机质积累。周年免耕秸秆全量还田模式20cm处紧实度降低，渗水速率增大，保水性能下降。研究结果说明，不同耕作模式下土壤养分供给能力不是影响作物产量的主要因素，因土壤物理性质变化导致水分下渗差...

Full description

Saved in:
Bibliographic Details
Published in西南农业学报 Vol. 25; no. 3; pp. 786 - 791
Main Author 李朝苏 汤永禄 黄钢 吴春 马孝玲
Format Journal Article
LanguageChinese
Published 四川省农业科学院作物研究所,四川成都,610066 2012
Subjects
作物产量
周年耕作模式
土壤特性
麦稻轮作
周年耕作模式
麦稻轮作
土壤特性
作物产量
Online AccessGet full text
ISSN1001-4829
DOI10.3969/j.issn.1001-4829.2012.03.009

Cover

More Information
Summary:2004—2009年，在成都平原麦稻轮作区研究了不同周年耕作模式（周年翻耕无秸秆还田、小麦免耕稻草覆盖还田＋水稻旋耕无秸秆还田、麦稻周年免耕秸秆全量还田、麦稻周年垄作免耕秸秆全量还田）对作物产量和土壤特性的影响。结果表明，不同模式问小麦产量差异较小，水稻产量差异较大；免旋结合稻草覆盖还田模武年际闻水稻产量较其他模式稳定。麦稻关键生育阶段0-30cm土层速效养分含量模式间差异较小；免旋结合稻草覆盖利于土壤表层有机质积累。周年免耕秸秆全量还田模式20cm处紧实度降低，渗水速率增大，保水性能下降。研究结果说明，不同耕作模式下土壤养分供给能力不是影响作物产量的主要因素，因土壤物理性质变化导致水分下渗差异是水稻产量差异的重要原因，免旋结合稻草覆盖还田模式似乎更利于麦稻轮作田生产能力的稳定。
Bibliography:LI Chao-su, TANG Yong-lu , HUANG Gang, WU Chun, MA Xiao-ling （Crop Research Institute, Sichuan Academy of Agricultural Science, Sichuan Chengdu 610066, China）
51-1213/S
The wheat-rice rotation system was the major cropping system in south Asia and the Yangtze River Basin of China. From 2004 to 2009, the effect of different annual tillage patterns on crop yields and soil properties in a wheat-rice rotation system was studied in the Cheng- du Plain. The effects of four tillage patterns （annual plowing, no-tillage in wheat season with rice straw returning and rotary tillage in rice season, annual no-tillage with rice and wheat straw returning, annual ridge-no-tillage with rice and wheat straw returning）were tested in the experiment. The results showed that the difference in wheat yield among different treatments in the same year was not significant, but the difference in rice yield was obvious. The rice yield of the treatments with annual no-tillage and total straw mulching was lower than that of the control treat
ISSN:1001-4829
DOI:10.3969/j.issn.1001-4829.2012.03.009