纳罗克非洲狗尾草良种繁育技术研究进展

doi:10.11686/cyxb2017197

摘要/Abstract

摘要： 纳罗克非洲狗尾草在世界上热带和亚热带地区广泛栽培,具有再生性强,适口性好,持久性好,耐牧性强,耐旱、耐寒、耐涝、抗病虫害等特性,牛羊喜食,适合建植永久性放牧草地和割草地。在我国推广种植已有30多年,是我国南方天然草地改良、人工草地建植、石漠化治理和草牧业生产的主要骨干草种之一。但是,目前该品种存在种用性状退化和种子产量低等问题,为了提高其种子产量和良种繁育效率,文章对纳罗克非洲狗尾草的利用现状、种性复壮、种子产量构成因子和施肥、刈割、收种等良种繁育关键技术进行了详细阐述和分析,得出种性复壮、施肥、刈割、收种等是纳罗克非洲狗尾草良种繁育的重要因素,今后应从田间选择优异植株、施肥、刈割和收种等良种繁育关键环节进行进一步研究,可为该优良牧草品种的良种繁育和产业化提供理论技术支撑。

Abstract: Setaria sphacelata cv. Narok has been cultivated extensively in tropical and subtropical areas around the world, and has favorable forage attributes of good palatability, regeneration, and persistence. It is tolerant to grazing, drought, cold, water logging, diseases, and insect attack, and so it has been widely grown as grassland for long-term grazing and cutting. Narok has a cultivation history of more than 30 years in China, and it is one of the elite cultivars for grassland establishment and improvement, karst rocky desert restoration, and herbivore production in Southern China. However, its disadvantages are its low seed yield and degraded genus characters. Therefore, our research goal is to improve the yield and quality of Narok seeds. In this paper, we discuss the utilization status, genus rejuvenation, and seed yield components of Narok, and describe some of the crucial technologies for Narok seed production, including fertilization, clipping, and seed harvesting. We conclude that further research should focus on the selection of high-quality plant materials, and on the optimization of fertilizer regimes, clipping, and seed harvesting technologies for the breeding and seed production of Narok. The results of this study provide technical support for the seed breeding and production of Narok in China.

张美艳, 薛世明, 南志标. 纳罗克非洲狗尾草良种繁育技术研究进展[J]. 草业学报, 2018, 27(1): 195-203.

ZHANG Mei-yan, XUE Shi-ming, NAN Zhi-biao. Advances in seed breeding and production of Setaria sphacelata cv. Narok[J]. Acta Prataculturae Sinica, 2018, 27(1): 195-203.

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