带型配置及施氮量对玉米间作豌豆产量和水分利用效率的影响

Effects of different nitrogen applications and intercropping stripe compound on yield and WUE under maize/pea intercropping

通过大田试验,研究了施氮水平和带型配置对玉米间作豌豆产量及水分利用效率(WUE)的影响.结果表明:玉米间作豌豆具有显著的间作优势,土地当量比介于1.08～1.55之间,3:4间作模式的产量显著高于2:4间作模式,施氮能够显著提高作物的产量,而中、高施氮处理差异不显著;间作的耗水量比单作高13.66%～18.93%,3:4间作模式在中施氮处理的耗水量显著高于2:4间作模式,玉米对间作复合群体的影响大与豌豆;施氮条件下玉米间作豌豆显著提高了WUE,3:4间作模式在高施氮水平的WUE显著高于2:4间作模式,而中、高施氮处理差异不显著,2:4间作模式中玉米对复合群体的贡献大,3:4间作模式中豌豆对复合群体的贡献大.

A field experiment was conducted to investigate the effects of nitrogen application and stripe compound indexes on yield and WUE of maize/pea intercropping systems in an oasis irrigation region.The results showed that there was a significant yield advantage in maize/pea intercropping,the limits of LER was 1.08～1.55,the yield of 3∶4 type was significantly higher than that of 2∶4 type.Moreover,yield of nitrogen application was significant higher than that of no nitrogen application treatment,there was no significant difference between middle and high nitrogen application;water consumption of intercropping was higher 13.66 %～18.93 % than that of monocropping,water consumption of middle nitrogen application at 3∶4 type was significant higher than that of 2∶4 type,water consumption of maize was higher than that of pea in maize/pea intercropping canopy;the WUE was a significantly increased in maize/pea intercropping at nitrogen application and nitrogen application was significantly higher than that of no nitrogen application,there was no significant difference between middle and high nitrogen application,contribution of maize in 2∶4 maize/pea intercropping to WUE was greater than pea,in 3∶4 maize/pea intercropping,contribution of pea was greater.