【摘要】 以黑豆为试验材料,采用田间定位小区试验,在辽北风沙区研究不同生育期和不同调亏程度的调亏灌溉对黑豆生长动态、地上部分干物质积累、产量及水分利用效率的影响。结果表明,苗期和成熟期调亏灌溉处理SR较常规灌溉处理CK不改变黑豆株高和SPAD值的变化趋势,其黑豆叶面积指数显著高于全生育期连续调亏灌溉处理CR。SR处理的地上部分干物质积累显著高于CR处理,且与CK处理无显著差异。与CK处理相比,全生育期连续调亏灌溉显著降低单株荚数、单株粒数及粒重,从而显著降低黑豆产量。从相关分析结果可以看到,较好的生长态势保证了产量的稳定和增加。综合产量和水分利用效率指标,在辽北风沙区黑豆生产上宜采用苗期和成熟期调亏灌溉实现节水稳产。本研究结果可为该区域黑豆生产实践上高效水资源管理提供理论指导。更多还原

【Abstract】 A field experiment was conducted in North Area of Liaoning Province to evaluate the effects of regulated deficit irrigation of different deficit levels in different growth stages on the black bean growth dynamics,aboveground dry matter accumulation,grain yield and water use efficiency.The results showed that slight regulated deficit irrigation at seedling and mature stage(SR)did not alter the basic tendency of plant height and SPAD value as compared with the treatment with sufficient irrigation(CK),and the leaf area index was significantly higher than the continuous regulated deficit irrigation in the whole growth stage(CR).The aboveground dry matter accumulation under SR was significantly higher than CR,and there was no significant difference between SR and CK.Compared with CK,the pods number,grain number and grain weight per plant were significantly reduced under CR,thus reducing the yield of black bean.Correlation analysis indicated that the better growth of bean plant ensured the stability and increase of grain yield.In conclusion,SR was recommended for black bean production in the North of Liaoning province to achieve the dual goal of water saving and yield stabilization.Our results could provide theoretical guidance for the efficient water resources management for black bean production in this region.更多还原