华北平原冬小麦不同培肥措施的节水增产效应研究

根据华北平原农业水资源日趋减少的现状 ,开展了以减少土壤水分蒸发 ,提高水分利用效率为目的的不同培肥措施的节水田间试验。研究结果表明 :秸秆还田具有明显的节水增产效应。在相同灌溉水量 ( 1 50mm)的情况下 ,玉米秸与小麦秸全部还田较不还田 (对照 )增产小麦 540 kg/ hm2 ,仅麦秸还田较对照增产小麦4 65kg。水分利用效率分别提高了 2 .3 4和 2 .3 6kg/ ( hm2 · mm) ;同时增施有机肥可增产小麦 73 5kg/ hm2 与660 kg/ hm2 ,水分利用效率分别提高 2 .2 1和 2 .1 8kg/ ( hm2 · mm)

Effects of Yield-improving and Water-saving of Different Soil Fertilization Systems in Winter Wheat in North China Plain

Water resource shortage is more and more serious in North China Plain in resent years. In order to reduce water evaporation and improve water use efficiency, a field experiment was carried out to investigate the effects of several soil fertilization systems in water saving and yield improving. Experimental results showed that straw incropration and applying organic fertilizer could improve yield and save water significantly. Under the same water application of 150mm, the yield and water use efficiency of winter wheat were 540 kg/hm 2 and 2.34 kg/(hm 2·mm) higher, 735kg/hm 2 and 2.21 kg/(hm 2·mm) higher, 465 kg/hm 2 and 2.36 kg/(hm 2·mm) higher, and 660 kg/hm 2 and 2.18 kg/(hm 2·mm) higher, comparing with the yield and water use efficiency in the field without incropration and organic fertilizers, in the field with fertilization system of all corn and winter wheat straws incropration, in the fields with system of all straws incropration plus organic fertilizer application, in the fields with system of only winter wheat straws incropration and in the fields with system of winter wheat straws incropration plus organic fertilizer respectively.