滴灌水分亏缺对冬小麦麦后复播油葵生长和产量的影响

The Effect of Water Deficit of Drip Irrigation on Growth and Yield of Sunflower After Winter Wheat

在北疆地区进行了冬小麦麦后复播油葵滴灌试验,结果表明,油葵苗期亏水对地上干物质积累有一定影响,现蕾期亏水严重影响花盘分化生长,同时抑制油葵地上干物质积累,显著降低油葵叶面积;灌浆期是油葵需水关键期,该阶段亏水显著降低油葵单株粒重和千粒重,产量也随之降低15.9%;开花期亏水能够提高油葵座果率,增产幅度为7.5%,WUE提高15%左右,节水增产效果显著。

The experimental of sunflower after winter areas.The research indicated that the water deficit in mulation on the ground of sunflower.The water deficit wheat under drip irrigation was carried out in Beijiang seedling stage would have influence on dry matter accuin squaring stage would have influence on the faceplate differentiation, and the dry matter accumulation on the ground would be restrained. Meanwhile ,the leaf area would be reduced.The pustulation period was the key water requirement period of sunflower,and the water deficit in this stage would lower grain weight per plant and thousand seed weight observably.The yield of sunflower would reduce 15.9% subsequently.The water deficit in anthesis stage could improve fruiting percentage, and the increase range in yield was 7.5%.The WUE of sunflower could be increased about 15%,and the result of water saving and increasing yield was noteworthy.