甘肃河西一熟制灌区玉米/蚕豆间种植模式的水肥耦合效应

目的]研究甘肃河西一熟制灌区玉米（Zea mays L.）/蚕豆（Vicia fabaL.）带田水肥耦合效应。方法]采用2因子5水平通用旋转组合设计,考察施氮量和灌水量对玉米/蚕豆带田产量、水分利用效率和灌水利用效率的耦合效应。结果]氮素和水分的合理利用是提高产量和灌水利用效率的关键。在玉米和蚕豆混合产量目标值为7 500~9 000 kg/hm2时,施氮量应为232.65~391.20 kg/hm2,灌水量应为3 662.40~5 190.30 m3/hm2。在水分利用效率目标值为9.00~12.00 kg/（mm.hm2）时,施氮量应为230.10~393.60 kg/hm2,灌水量应为3 628.95~5 223.75 m3/hm2。在灌水利用效率目标值为12.00~15.00 kg/（mm.hm2）时,施氮量应为239.40~443.70kg/hm2,灌水量应为4 248.75~5 800.65 m3/hm2。结论]该研究可以为甘肃河西一熟制灌区玉米间种蚕豆种植模式的合理灌溉和施肥提供参考依据。

Coupling Effects between Water and Fertilizer of Intercropping Maize(Z. mays L.) with Broad Bean(V. faba L.) in Mono-Maturity Irrigation Area in Hexi,Gansu

Objective] The aim was to study the coupling effects between water and fertilizer of intercropping maize with broad bean in Mono-Maturity Irrigation Area in Hexi,Gansu.Method] The rotational composite design of quadratic regression with 3 factors and 5 levels were used to study the coupling effects of adding N fertilizer amount and irrigating water amount on yield,water use efficiency and irrigation use efficiency when intercropping maize with broad bean.Result] Reasonably using N and water was the key o...