玉米/大豆带状复合种植模式下减量施氮对系统产量的影响  

Effect of Reduced N Application on Yield in Corn/Soybean Intercropping System in Strip Planting Model

作　　者：牛建彪[1] 陈光荣[2] 樊廷录[2] 王立明[2] 杨如萍[2] 董博[2] 张国宏[2] 杨桂芳 温健[4] 南琴霞 

机构地区：[1]甘肃省榆中县农业技术推广中心,甘肃榆中730010 [2]甘肃省农业科学院旱地农业研究所,甘肃兰州730070 [3]甘肃环科雅农业科技有限公司,甘肃兰州730070 [4]甘肃省永登县农业技术推广中心,甘肃永登730030 [5]甘肃省皋兰县农牧局,甘肃皋兰730020

出　　处：《甘肃农业科技》2017年第7期37-42,共6页Gansu Agricultural Science and Technology

基　　金：兰州市农业科技专项(2015-3-37);甘肃省农业科学院中青年基金(2015GAAS20);国家现代农业产业技术体系建设专项(CARS-04-CES17)

摘　　要：2016年在兰州地区不同海拔条件下,研究了玉米/大豆种植模式(玉米单作、大豆单作和玉米/大豆间作)和氮肥水平(不施氮、传统施氮和减量施氮)对作物产量的影响。结果表明,不同种植模式下的传统施氮(CN)和减量施氮(RN)间产量差异不显著。在皋兰、榆中、永登3个试验点,单作玉米在传统施氮(CN)条件下产量较高,分别为13 478.49、12 974.21、11 073.12 kg/hm^2;而间作玉米在减量施氮(RN)条件下产量较高,分别是12 387.02、11 994.41、10 879.27 kg/hm^2;单作大豆和间作大豆均在减量施氮(RN)条件下产量最高;玉米/大豆间作系统的总产量均以减量施氮(RN)条件下最高,分别是14 024.07、13 533.68、12 306.86 kg/hm^2。可见,减量施氮下的玉米/大豆复合种植模式的系统产量并未降低,而氮肥利用效率显著提高,适宜在该区域大面积推广。Corn/soybean intercropping pattern is widely adopted in different altitudes in Lanzhou city. Whereas the traditional fertilized measures used by farmers are not good for high yield of corn/soybean intercropping system. In order to get high yield for both corn and soybean in this system,a field experiment is conducted to investigate the effect of the system crop yield in 2016. The experiment includes three planting patterns（corn mono cropping,soybean mono cropping and corn/soybean intercropping）and three rates of N fertilizer application,CK,the conventional N application（CN） and the reduced amount of N application（RN）. The result indicates that there is no significant difference between CN and RN of yield for different cropping system,for the corn mono cropping,the yields of CN are highest,which are 13 478.49 kg/hm^2,12 974.21 kg/hm^2 and 11 073.12 kg/hm^2,respectively. For the intercropping corn the yields of RN are highest,which are 12 387.02 kg/hm^2,11 994.41 kg/hm^2 and 10 879.27 kg/hm^2,respectively.For the mono soybean or intercropping soybean,the yields of CN are highest,and the yields of corn/soybean intercropping are highest either,which are 14 024.07 kg/hm^2,13 533.68 kg/hm^2 and 12 306.86 kg/hm^2. Therefore,reduced amount of N application for this intercropping system could increase the crop yield per unit area greatly,which could be extended at large scale.

关 键 词：玉米/大豆间作 减量施氮 产量 海拔 

分 类 号：S513[农业科学—作物学] S565.1