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Effects of Mixed Fertilizer Applications on hay yield of Alfalfa

Animal Husbandry and Feed Science 2011年第1期3卷 43-45,48页

作者： GAO Xiang-pei LI Yun-qi TANG Shu-xia LI Jian-guo CAO Yu-feng LI Qiu-feng YU He-xing LIYue-e YANG Wu College of Animal Science and Technology Agricultural University of Hebei Baoding 071001 China Bureau of Agriculture Huanghua 061100 China Animal Husbandrv Bureau. Huanohua 061100. China

[ Objective] To study the effects of combined application of different elements on alfalfa hay yield. [ Medthod] Potassium sulfate, ammonium chloride, superphosphate and magnesium oxide were applied to alfalfa field in the experiment, and quaternary quadratic regression orthogonal combination was used to examine the effects of the experiment factors on hay yield of alfalfa. [ Result] The order of targets based on the effects on hay yield is as follows： potassium sulfate 〉 ammonium chloride 〉 magnesium oxide 〉 superphosphate. Among them, the potassium sulfate had a significant impact on alfalfa hay yield. The interaction between potassium sulfate and magnesium oxide also had a significant impact on alfalfa hay yield. [ Conclusion] The optimal cultivation measures for alfalfa hay yield of more than 19 224.6 kg/hm^2 are as follows： potassium sulfate, 163.253 - 181.679 kg/hm^2 ; ammonium chloride, 155.877 - 174.258 kg/hm^2 ; superphosphate, 566.177 - 632.924 kg/hm^2 ; and magnesium oxide, 30.060 - 33.628 kg/hm^2.

关键词： Fertilizer Alfalfa hay yield Quadratic rotational regression orthogonal combination

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Effects of Seeding Rate, Water and Fertilizer Coupling on Grass yield of Forage Millet ( Setaria itlica) in Hebei

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Animal Husbandry and Feed Science 2016年第5期8卷 283-290,314页

作者： Zhou Hanzhang Liu Huan Zhou Xinjian Wei Zhimin Yuan Shuhong Hou Shenglin Xia Xueyan Institute of Millet Crops Hebei Academy of Agriculture and Forestry Sciences/National Foxtail Millet Improvement Center/Minor Cereal Crops Laboratory of Hebei Province Shijiazhuang 050035 China Agricultural Bureau of Shenze County Shenze 052560 China Agricultural Bureau of Shijiazhuang City Shijiazhuang 050021 China

The paper was to study the effects of seeding rate, water and fertilizer （ N, P, K） coupling on grass yield of forage millet Jigu No. 18 （Setaria itlica）. A quadratic regression otthogonal rotation combination with five factors was designed in pot experiment. The mathematical model between hay yield of forage millet （Y） and soil moisture content （ x1 ）, N fertilizer （x2 ）, P fertilizer （x3 ）, K fertilizer （x4） and seeding rate （x5 ） was established to simulate optimization. The results showed that moisture content, seeding rate, P fertilizer and K fertilizer had important effects on hay yield. Soil moisture content had the biggest impact on yield, followed by seeding rate, P and K fertilizer. The coupling effects of various factors successively were moisture content / seeding rate 〉 K fertil- izer/seeding rate 〉 N / P fertilizer 〉 soil moisture/N fertilizer 〉 soil moisture/ P fertilizer. Moreover, the mathematical model, Y = 20 543. 756 - 565. 570xI -39. 942x2 -23. 102x3 -38. 470x4 - 151. 877x5 ＋ 1. 052x^x2 ＋ 1. 604xIx3 ＋ 12. 953xt x5 - 0. 173x2x3 ＋ 0. 737x4x5 - 2. 292x5^2, was established. The optimum soil moisture and seeding rate were determined as 10% andl5 kg/hm2, respectively. In this scheme, the hay yield was 14 037. 151 0 kg/hm^2 and the economic benefit was 13 887.15 yuan/hm^2 ; the income was increased by 23.68% （ 3 288.98 yuan/hm^2 ） compared to the optimal combination in the test. The results provided a theoretical basis and technical support for forage millet production in Hebei Province.

关键词： Forage millet Seeding rate Water and fertilizer coupling hay yield

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Study on the Influence of Climatic Change on Pasture Growth in Inner Mongolia Grassland

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Meteorological and Environmental Research 2014年第5期5卷 43-47,52页

作者： Li Xinghua Liu Xiurong Cao Yanfang Sun Xiaolong Meteorological Service Center of Inner Mongolia Meteorological Information Center of Inner Mongolia The Centre of Inner Mongolia Ecology and Agricultural Meteorology

Through analyzing statistically metrological observation data from 1971 to 2010 and pasture data from 1983 to 2012 at 6 animal husbandry meteorological testing stations of Inner Mongolia grassland, the conclusions were drawn. Those were that annual average temperature rose in a straight line in Inner Mongolia grassland, and the increase rates of annual average temperature in meadow steppe and typical steppe were 0.40 and 0.34 ℃/10 a respectively. Annual rainfall had 10-year cyclical characteristics, and precipitation in the 1990s was the most but reduced significantly after 2000. Climate experienced the cold wet -cold dry -warm wet -warm dry periods. Warm and dry climate made the average heights of pasture in meadow steppe and typical steppe of Inner Mongolia cut down 2.4 and 9.3 cm in nearly 12 years than that in the 1990s; the average coverage of herbage decreased by 11% and 13%; the average hay yields reduced by 1 019.8 and 671.4 kg/hm^2.

关键词： Climatic change Pasture growth period Pasture height Grass coverage hay yield China

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Planting Performance of Pennisetum purpureum Schumab *** in the Southern Region of China

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Agricultural Science & Technology 2016年第3期17卷 667-671页

作者：易显凤赖志强姚娜蔡小艳韦锦益赖大伟梁永良广西畜牧研究所广西南宁530001

[Objective] The present experiment was conducted to investigate the yield,adaptability and quality characteristics of Pennisetum purpureum Schumach cv. Purple to provide reference for the certification and development of new varieties.[Method] With P. purpureum Schumab cv. Purple as experimental material, the variety comparison tests were conducted in Nanning, Lingyun, and Tiandeng in Guangxi from 2007 to 2009, and variety regional trials were conducted in Danzhou of Hainan, Fuzhou of Fujian and Zhanjiang of Guangdong from 2011 to 2013. Its comprehensive characters of plant height, hay yield, stem-leaf ratio and nutritional components were determined, and were compared with those of P. purpureum × *** cv. Reyan No.4 and P. purpureum Schum cv. Guiminyin. [Result] The average height of P. purpureum Schumach cv. Purple was 706.54 cm, which was5.92% and 8.44% lower than that of P. purpureum × P. americanum cv. Reyan No.4 and P. purpureum Schum cv. Guiminyin, respectively. The average hay yield of P. purpureum Schumach cv. Purple was 32.74 t/ha in Nanning, Lingyun, and Tiandeng of Guangxi from 2007 to 2009, and 22.41 t/ha in Danzhou of Hainan, Fuzhou of Fujian and Zhanjiang of Guangdong from 2011 to 2013. Although its hay yield was lower than two control varieties, the difference was not significant（P 0.05）.The stem-leaf ratio of P. purpureum Schumach cv. Purple was 0.98：1. Moreover,the analysis on the nutritional components of dry matter showed that compared with P. purpureum × P. americanum cv. Reyan No.4 and P. purpureum Schum ***, the crude fiber of P. purpureum Schumab cv. Purple was decreased by4.76% and 2.78%, respectively; the neutral detergent fiber decreased by 5.07% and2.22%, respectively; the acid detergent fiber was decreased by 2.54% and 1.99%,respectively; the crude fat was increased by 64.29% and 43.75%, respectively; the calcium content was increased by 28.00% and 33.33%, respectively; the phosphorus content was increased by 9.68% and 2

关键词： P.purpureum Schumab cv.Purple Plant height hay yield Stem-leaf ratio Nutritional component Southern region of China

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Studies on the Super-high-yield Cultivation Techniques for Oats in Tibet

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Agricultural Science & Technology 2014年第5期15卷 805-808页

作者：魏娜金涛西藏农牧科学院农业质量标准与检测研究所西藏拉萨850032 西藏资源与环境研究所西藏拉萨850032

[Objective] The aim was to explore the optimal levels of different factors influencing oat yield in Lhasa, Tibet. [Method] Orthogonal test was conducted to analyze oat cultivation technology in Tibet. [Result] Qingyin No.2 and Baiyan No. 8 were proved the optimal species to be grown in Lhasa with optimal sowing quantity at 150-180 kg/hm2. Sowing term is an extremely significant factor affecting growing season, and species and N fertilizer are significant factors. Al factors have none significant effects on hay yield. [Conclusion] The research provides theoretical refer-ences and technological supports for large-scale planting.

关键词： Oats Grain yield Growth period hay yield Orthogonal test Tibet

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Variation of isoflavones production in red clover as related to environment,growth stage and year

Variation of isoflavones production in red clover as related...

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中国草学会饲料生产专业委员会第十六次学术研讨会

作者： Wen Hua Du~(1,2*),Xin Hui Tian~1,Yue yan~1 1 College of Grassland Science,Gansu Agricultural University,Lanzhou 730070,PR China 2 Key Laboratory of Arid and Grassland Ecology(Lanzhou University),Ministry of Education, Lanzhou 73000,PR China

Trifolium pratense *** is a dominant red clover variety for animal feeding and pharmaceutical industry in Alpine Pasture Region of Gansu province,northwest *** order to achieve the best isoflavones production,a 3-year trial was conducted at three locations to study variations of hay yield(HY),total isoflavones concentration(TIC) and isoflavones yield (IY) at different growth stages under different environmental *** isoflavone compounds and distribution of isoflavones in leaves,stems and inflorescences were also *** results indicated that there were large variations on hay yield and isoflavones concentration among different sites,growth stages,age and parts of *** red clover harvested at the flower bud stage had the highest isoflavones yield(86.30 kg ha).The temperate climate region,Guanghe,provided the best growth condition among three sites for isoflavones production(58.93 kg ha).The highest isoflavones production(53.42 kg ha) appeared at the second year of *** Minshan red clover,isoflavones are mainly distributed in leaves(1.12%). The predominant isoflavone compounds were formononetin(For)(0.27%) and biochanin A(Bio A)(0.25%).

关键词： red clover hay yield isoflavones production environmental condition

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