半干旱区坡耕地抗旱保水技术集成对大豆水分利用效率的影响

黑龙江省西部半干旱区属典型的东北黑土区,为我国重要的商品粮生产基地。然而,由于地形地貌、气候条件的复杂多变,降水的时空分布不均,以及人类的长期干预造成的生态环境的改变,致使该区连年干旱。干旱及水土流失已成为制约该区经济发展的主要因素。根据黑龙江省西部半干旱区的自然特点,选取了坐水播种和苗期补灌2种抗旱节水技术和垄向区田保水技术,在甘南县国家863试验基地研究了该3项技术的集成对WUE的影响。结果表明,该项技术可以显著的提高大豆的WUE值。

Influence of Anti-drought and Water-retention Technologies Assembling on WUE for Soybean in Slopping Cultivated Land in Semiarid Region

The west part of Heilongjiang province is in typical Northeast black soil region,which is a important base for grain production in China.But due to the complex of natural condition,the un-uniform distribution of rainfall,and the change to ecoenvironment resulted from long-term activities of human being,drought disaster always happens in the region.Draught and soil and water loss have become the main factors which limit the economic development in the region.According to the characteristics of the resources,environment and the natural disaster to agriculture,bed-irrigation and seedling stage mending irrigation,two anti-draught and water-saving technologies,and ridge plotted field,a kind of soil and water conservation technology,were selected.The influences of the 3 technologies assembling on WUE for soybean were studied in Gannan county,the national 863 project experimental base.The results show that the assembling technology can improve the WUE effectively.