摘要
通过大田试验,探讨了间作小麦不同留茬方式对间作玉米产量、耗水量和水分利用效率(WUE)的影响。结果表明,与单作玉米(SC)相比,间作小麦25cm高茬收割压倒处理(W/C1)、25cm高茬等量秸秆覆盖处理(W/C2)、不留茬收割处理(W/C3)间作玉米产量分别增加了12.53%、17.44%、11.27%,W/C2处理下玉米产量显著高于W/C1与W/C3处理。间作增大了玉米耗水量,小麦留茬可显著降低间作玉米的耗水量,3种间作处理玉米的耗水量较单作分别增加了12.86%、9.71%、16.95%,W/C1和W/C2处理下耗水量较W/C3处理分别降低了3.63%和6.61%。3种间作处理玉米的WUE较单作分别提高10.82%、22.92%、4.78%;其中,W/C2处理间作玉米的WUE最大,且显著高于W/C1、W/C3处理。试验条件下,小麦25cm高茬等量秸秆覆盖是该区提高间作产量和WUE的有效措施之一。
Effects of different stubble retention patterns of intercropped wheat on intercropped corn yield, water consumption and WUE were explored via a filed experiment. The results showed that, compared with sole corn （SC）, intercropped corn yields under conventional tillage with 25 cm stubble incorporated （W/C1）, no-tillage with 25cm stubble mulch （W/C2）, conventional tillage （W/C3） increased by 12.53%, 17.44%, 11. 27%, and corn yield of W/C2 was significantly higher than those of W/C1 and W/C3, Intercropping increased water consumption of wheat/corn, while wheat stubble could significantly reduce water consumption of intercropped corn. Water consumption of intercropped corn under those three treatments increased by 12.86%, 9. 71%, 16. 95%, respectively, while those of W/C1 and W/C2 decreased by 3.63% and 6.61% compared with W/C3. Their WUE enhanced by 10.82%, 22.92%, 4.78% compared with sole corn; WUE of W/C2 was the highest among those three treatments, and was significantly higher than those of W/C1 and W/C3. No-tillage with 25 cm stubble mulch is an effective treatment to improve yield and WUE of intercropped corn.
出处
《灌溉排水学报》
CSCD
北大核心
2013年第2期107-110,共4页
Journal of Irrigation and Drainage
基金
甘肃省杰出青年基金项目(1111RJDA006)
国家自然科学基金项目(31160265)
国家科技支撑计划项目(2012BAD14B10)
关键词
绿洲灌区
间作
留茬覆盖
水分利用效率
oasis irrigation region
wheat/corn intercropping
stubble mulch
water use efficiency
