水氮耦合对科尔沁沙地燕麦生产性能的影响  

Effect of Water-nitrogen Coupling on Oat Production Performance in Horqin Sandy Land

作　　者：李振松 李向林[1] 万里强[1] LI Zhen-song;LI Xiang-lin;WAN Li-qiang(Institute of Animal Sciences,Chinese Academy of Agricultural Sciences,Beijing 100193,China)

机构地区：[1]中国农业科学院北京畜牧兽医研究所,北京100193

出　　处：《中国草地学报》2020年第4期145-152,共8页Chinese Journal of Grassland

基　　金：国家牧草产业技术体系(CARS-34);国家重点研发计划(2016YFC0500608-2)。

摘　　要：对科尔沁地区燕麦设置不同的灌溉定额、灌溉频率和氮肥水平进行处理,通过分析产量、水分利用效率、粗蛋白含量和相对饲喂价值4个生产性能指标,找到适合当地燕麦生产的水氮组合。结果表明:影响燕麦粗蛋白含量、水分利用率及产量的首要因素是灌溉频率,2d灌水一次时产量、水分利用效率和粗蛋白含量最高,分别为8028kg/hm^2、2.51kg/m^3和12.37%;燕麦的相对饲喂价值主要受氮肥的影响,施氮量为100kg/hm^2时相对饲喂价值较高。灌溉定额为264mm、2d灌水一次及100kg/hm^2的施氮量有利于当地的燕麦生产。Different irrigation quotas and frequencies, and nitrogen levels were applied to oats(Avena sativa L.) in Horqin area in this research to obtain the optimum water-nitrogen combination for local oats production by analyzing four production performance indexes, including yield, water use efficiency, crude protein content and relative feed value. The results showed that irrigation frequency was the most important factor for yield, water use efficiency and crude protein content of oats. Above indexes were the highest when irrigation was applied every two days, which were 8028 kg/hm^2, 2.51 kg/m^3 and 12.37%, respectively. The relative feed value of oat was mainly affected by nitrogen fertilization that the value was the highest when 100 kg/hm^2 of fertilizer was applied. In conclusion, the optimum cultivation technique was to apply irrigation 264 mm every two days with 100 kg/hm^2 nitrogen fertilizer.

关 键 词：科尔沁沙地 水氮耦合 燕麦 生产性能 

分 类 号：S544.9[农业科学—作物学]