农业资源与环境学报2015，Vol.32Issue(5)：456-462,7.DOI:10.13254/j.jare.2015.0032
水氮处理对复播油葵产量和水氮利用效率的影响
Effects of Watering and Nitrogen Fertilization on Yield and Water and Nitrogen Use Efficiency of Cropping Oil Sunflower
摘要
Abstract
The field experiment with split-plot design was conducted to study the effects of the interaction of water and nitrogen fertilization on the growth and yield of oil sunflower, water and nitrogen use efficiency of cropping oil sunflower. This experiment set three irrigation rate treatments, including high irrigation treatment(5 250 m3·hm-2), middle irrigation treatment(3 750 m3·hm-2), low irrigation treatment(2 250 m3·hm-2), and four nitrogen application rate treatments, covering no nitrogen fertilization treatment (0 kg·hm-2), low nitrogen application treatment(120 kg·hm-2), middle nitrogen application treatment(240 kg·hm-2)and high nitrogen application treatment(360 kg·hm-2). The results showed that the nitrogen absorption and nitrogen use efficiency of cropping oil sunflower increased as the irrigation rate increased. With the nitrogen application rate increased, the yield of cropping oil sunflower was increased when the nitrogen application rate was 0~240 kg·hm-2, but beyond the 240 kg·hm-2, there was no significant increase. With the irrigation rate increased, the water consumption amount of cropping oil sunflower increased all the time, but the water use efficiency increased first, and then decreased. Besides there was no significant difference between 240 kg·hm-2 and 360 kg·hm-2 treatment. Under our experiment condition, during the cropping oil sunflower growth peri-od, when the irrigation rate was 5 250 m3·hm-2(high irrigation rate)and the nitrogen fertilization was 360 m3·hm-2(high nitrogen application rate), the yield of cropping oil sunflower was 3 598 kg·hm-2. When the irrigation rate was 3 750 m3·hm-2(middle irrigation rate)and the nitro-gen fertilization was 240 m3·hm-2(middle nitrogen application rate), the yield was 3 518 kg·hm-2, with the yield components similar with the high irrigation rate and high nitrogen application rate treatment. Considering various factors, middle irrigation rate and middle nitrogen fertil-ization treatment could be the optimal combination for the high yield and high efficiency.关键词
油葵/灌水/氮/产量/水氮利用效率Key words
oil seed sunflower/watering/nitrogen/yield/water and nitrogen use efficiency分类
农业科技引用本文复制引用
谈建鑫,景峰,刘建国..水氮处理对复播油葵产量和水氮利用效率的影响[J].农业资源与环境学报,2015,32(5):456-462,7.基金项目
国家"十二五"科技支撑计划项目(2012BAD42B03) （2012BAD42B03）
