摘要
针对西北干旱区优质饲草料不足、水资源缺乏等问题,以中科1号羊草人工草地为研究对象,在干旱区自然降雨条件下探讨不同微肥对羊草生长发育的影响.结果表明:拔节期配施微肥可增加羊草干草产量,增产效果为硼(B)>铁(Fe)>锰(Mn)>钼(Mo)>锌(Zn),其中施用B和Fe肥分别较单施氮磷肥(CK)增产11.8%和11.2%;施用Fe和Mn肥使羊草叶片长度分别增加4.9%、13.5%.施用B肥后穗数增加8.5%,穗长增加28.6%,种子产量均增加17.5%,施用微肥亦可增加羊草粗蛋白含量,其中Fe、Mo肥增加幅度最大,较CK分别增加4.52%和3.14%.拔节期增施B肥可显著提高羊草干草产量和种子产量,建议干旱区推广应用.
In view of the shortage of high-quality forage grass and lack of water resources in the arid area of northwest China, the artificial grassland of Leymus ehinensis No. 1 was used as the research object to study the effects of different trace element fertil- izers on the growth and development of Leymus chinensis under the condition of natural rainfall in arid area. The results showed that the application of trace element fertilizers at jointing stage could increase the yield of Leymus chinensis hay. The yield in- crease effects were B 〉 Fe 〉 Mn 〉 Mo 〉 Zn. Compared with single application of nitrogen and phosphorus fertilizers （CK） , the yields increased by 11.8% and 11.2% ,respectively. Fe and Mn fertilizers increased the leaf length of Leymus ehinettsis by 4. 9% and 13.5% respectively. After application of B fertilizer,the number of spikes increased by 8.5% ,the spike length in- creased by 28. 6%, the seed yield increased by 17.5 %, and the application of trace element fertilizers also increased the con- tent of crude protein in Leymus chinensis ,the highest increases were obtained by Fe and Mo fertilizers ,which was 4. 52% and 3.14% higher than that of CK. The application of B fertilizer at the jointing stage can significantly increase the yield and seedyield of Leymus chinensis grass, and it is suggested that it should be popularized and applied in the arid area.
作者
董晓兵
郭秀芳
杨伟光
张庆分
刘辉
刘大伟
杨光悦
齐冬梅
刘公社
DONG Xiao-bing;GUO Xiu-fang;YANG Wei-guang;ZHANG Qing-fen;LIU Hui;LIU Da-wei;YANG Guang-yue;QI Dong-mei;LIU Gong-she(Institute of Botany, The Chinese Academy of Sciences, Beijing 100093, P. R. C.;University of Chinese Academy of Sciences, Beijing 100049, P. R. C.;Institute of Animal Sciences of Heilongjiang Province, Qiqihar 161005 ,P. R. C.;Xinjiang Silk Road Grass Group Co. , Ltd. Urumqi 830000, P. R. C.;Jinghe New City of Xixian New Area, Xi＇an 713700, P. R. C.)
出处
《西南民族大学学报（自然科学版）》
CAS
2018年第2期111-116,共6页
Journal of Southwest Minzu University(Natural Science Edition)
基金
国家科技部973项目(2014CB138704)
中国科学院科技服务网络计划(STS计划)(KFJ-EW-STS-119)
牧草物种资源保护项目(2130135)
关键词
干旱区
微肥
干草产量
种子产量
粗蛋白含量
arid region
trace elements fertilizer
hay yield
seed yield
content of crude protein
