华北平原冬小麦夏玉米不同培肥措施的节水增产效应研究

根据山东省醒台县农业水资源日趋减少的现状，开展了以减少土壤水蒸发、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，结果表明，秸秆还田与增施有机肥具有明显的节水增产效应，在相同灌溉水量（２５０ｍｍ）的情况下，玉米秸与小麦秸全部还田较玉秸小麦秸均不还田（对照）增产８８５ｋｇ．ｈｍ＾－２，水分利用效率提高３．３，在全还基础上增施有机肥较对照增产１８７５ｋｇ．ｈｍ＾－２，水分利用效率提高３．６０；仅小

Yield increasing and water saving effect under different soil fertility improvements in wheat-corn intercropping field in Huabei Plain

Water resource in agriculture in Huabei Plain has been increasingly reduced in recent years. In order to reduce water evaporation and improve water utilization efficiency, the field experiment on water saving under different soil fertility improvements was carried out in Huantai county, Shandong Province. The result showed that straw incorporation and organic fertilizer application could increase yield and save water clearly. Under the same amount of irrigation(250 mm), the field with all corn and wheat straw incorporation had a higher yield of 885 kg.hm-2 than the field without straw incorporation, and a higher water efficiency of 3.13. The field with all corn and wheat straw incorporation and organic fertilizer application had a higher yield of 1875 kg.hm-2 than the comparing field, with a higher water efficiency of 3.60. The field with wheat straw incorporation had a higher yield of 675 kg.hm-2 than the comparing field, with a higher water efficiency of 3.24. The field with wheat straw incorporation and organic fertilizer application had a higher yield of 1200 kg.hm-2 than the comparing field, with a higher water efficiency of 3.28.