中国草地学报2025，Vol.47Issue(5)：102-112,11.DOI:10.16742/j.zgcdxb.20240199
播种量与施氮水平对盐地碱蓬生长和饲喂品质的影响
Effect of Sowing Rate and Nitrogen Application Level on Growth and Feeding Quality of Suaeda salsa
摘要
Abstract
The objective of this study is to investigate the effects of different sowing rates and nitrogen application levels on the growth and feeding quality of Suaeda salsa under drip irrigation.A two-factor full-combination field experiment was conducted with sowing rates of 10,20,and 30 kg/hm2 of Suaeda salsa and nitrogen application rates of 100,200,and 300 kg/hm2.The results showed that sowing rate and nitro-gen application level,as well as their interaction,significantly affected the growth,biomass,salt uptake,and water use efficiency of Suaeda salsa.Under the same nitrogen application level,forage quality,bio-mass,salt uptake,and water use efficiency first increased and then decreased with increasing sowing rate.In contrast,the partial fertilizer productivity significantly decreases,while the net profit first increased and then decreased.Improvement of the coordinated overall benefits of sowing rate and nitrogen application rate was revealed.Based on the multi-objective optimization of the spatial analysis method,net profit and salt uptake simultaneously reached over 98%of their maximum values when the seeding rate was 20.20～21.44 kg/hm2 and the nitrogen application rate was 222.45～250.87 kg/hm2.The results of this study can provide a refer-ence for the ecological development and utilization of saline-alkali land in arid areas.关键词
盐地碱蓬/滴灌/氮肥/播种量/饲草品质Key words
Suaeda salsa/Drip irrigation/Nitrogen fertilizer/Sowing rate/Forage quality分类
农业科技引用本文复制引用
马莉,喜炜,杨晓军..播种量与施氮水平对盐地碱蓬生长和饲喂品质的影响[J].中国草地学报,2025,47(5):102-112,11.基金项目
新疆农业职业技术大学2023年院级课题,自然科学类项目(XJNZYKJ202328) （XJNZYKJ202328）
