【摘要】 为探明在高寒冷凉区芸豆生长的水肥耦合效应,笔者采用田间试验法,研究了施肥和覆膜对旱地垄沟种植芸豆耗水特征、水分利用效率及产量的影响。结果表明:在底墒较好、降水丰富的年份,施肥和覆膜垄沟种植的产量与农户模式相比,均有显著提高,单株荚数是其产量提高的关键因素;高肥具有明显的增产和提高水分利用效率的作用,在此基础上的覆膜垄沟种植可有效地减少土壤水分损耗,而显著提高水分利用效率。在高寒冷凉区,水分和养分都是作物生长的限制因子,在施肥和覆膜垄沟种植方式下,水肥互作效应显著,能够极大地提高产量和水分利用效率。更多还原

【Abstract】 To investigate the effect of water and fertilizer coupling on the growth of kidney bean in cold and arid region, the authors studied the effects of fertilization and plastic film mulched ridge-furrow cultivation on water consumption characteristics, water use efficiency and yield of kidney bean in dryland by adopting the field test method. The results showed that: fertilization and plastic film mulched ridge-furrow cultivation significantly increased the yield compared with conventional fertilization during the abundant precipitation year with the pre-sowing moisture in good condition, the number of pods per plant was the key factor in increasing yield; the application of fertilizer could apparently increase the yield and improve the effect of WUE;the plastic film mulched ridge-furrow cultivation could obviously reduce the consumption of soil water, so the effect of WUE by plastic film mulched ridge-furrow cultivation was significantly improved. Water and nutrients were the key factors limiting crop growth in cold and arid region. Under the fertilization and plastic film mulched ridge-furrow cultivation, the interaction effect of water and fertilizer is significant which could greatly improve the yield and WUE.更多还原