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种葛状元叶桂花
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作者 严传高 《老区建设》 2001年第12期7-8,共2页
关键词 叶桂花 葛根种植 种葛 野生葛 人工栽培 上饶市 出粉率 除草剂 优质高产 状元
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A Study on Cold Resistance of Osmanthus Fragrans Cultivars in Kaifeng, China
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作者 Dandan Yu Xiaohui Wang Weirui Zhang Fude Shang 《Journal of Life Sciences》 2010年第1期17-20,共4页
Low winter temperature is generally recognized as the chief factor limiting the northward distribution of Osmanthus fragrans. O. fragrans has been cultivated in Kaifeng for nearly two decades, yet little is known rega... Low winter temperature is generally recognized as the chief factor limiting the northward distribution of Osmanthus fragrans. O. fragrans has been cultivated in Kaifeng for nearly two decades, yet little is known regarding how well this plant has adapted to the city's cold winter. In a city-wide survey, we periodically examined O. fragrans leaves for visible symptoms of freeze damage, then measured leaf soluble sugar content, leaf electric conductivity, palisade layer thickness/leaf thickness ratio, and spongy layer thickness/leaf thickness ratio of several cultivars. The data thus collected were assessed to determine the cultivars' cold resistance levels. Our results indicate that the northward distribution of O. fragrans may be limited primarily by low spring temperatures rather than low winter temperatures. O. fragrans Sijigui and Huangchuan Jingui are the most cold resistant O. fragrans cultivars in Kaifeng, China. 展开更多
关键词 Kaifeng Osmanthus fragrans cold resistance.
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Planting Performance of Several Elephant Grass Species in Northern Guangxi Zhuang Autonomous Region
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作者 邓素媛 易显凤 +5 位作者 赖志强 姚娜 庞天德 韦锦益 史静 曹树威 《Agricultural Science & Technology》 CAS 2016年第12期2784-2787,2791,共5页
This study aimed to screen suitable species of Pennisetum purpureum for planting in northern Guangxi Zhuang Autonomous Region. During 2012-2014, a comparative field trial was carried out in Lingyun County of Baise Cit... This study aimed to screen suitable species of Pennisetum purpureum for planting in northern Guangxi Zhuang Autonomous Region. During 2012-2014, a comparative field trial was carried out in Lingyun County of Baise City in northern Guangxi to compare plant height, yield, stem-leaf ratio and nutrient composition am-ong Pennisetum purpureum Schumab cv. Purple, P. purpureum Schum cv. Guimin and P. purpureum Rich &#215; P. americana King grass cv. Reyan No.4. The results in-dicated that average annual fresh yield of P. purpureum Schumab cv. Purple reached 141.4 t/hm2, which was 2.3 t/hm^2 higher than that of P. purpureum_Rich×P. americana_King grass cv. Reyan No.4; both average annual fresh yield of these two species was lower than that of P. purpureum Schum cv. Guimin. Stem-leaf ratio of P. purpureum Schumab cv. Purple was the lowest (1.17), which was 17.8% lower compared with P. purpureum Schum cv. Guimin, with significant differences (P〈0.05), indicating that P. purpureum Schumab cv. Purple had more leaves. Crude protein content of P. purpureum_Schumab cv. Purple was slightly lower than that of P. purpureum Rich×P. americana_King grass cv. Reyan No.4, while P. purpureum Schumab cv. Purple was superior to P. purpureum Schum cv. Guimin and P. pur-pureum Rich ×P. americana_King grass cv. Reyan No.4 in other indicators. Specifi-cal y, P. purpureum Schumab cv. Purple contained 26.6% of dry matter, 39.1% of nitrogen-free extract and 2.9% of crude fat. 展开更多
关键词 Forage grass Pennisetum purpureum Schumab cv. Purple YIELD Stem-leaf ratio Nutrient composition ANTHOCYANIN Northern Guangxi Zhuang Autonomous Region
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