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氮肥种类及施氮水平对桂牧一号杂交象草体外发酵特性的影响 被引量:1
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作者 甘洁 李科云 +2 位作者 谭支良 刘小飞 汤少勋 《湖南农业大学学报(自然科学版)》 CAS CSCD 北大核心 2007年第3期309-313,共5页
为更好地指导桂牧一号杂交象草的优质高产栽培,设7个处理,分别为:A1(施尿素,150 kg/hm^2),A2(施尿素,300 kg/hm^2),A3(施尿素,450 kg/hm^2),B1(施碳铵,411.3 kg/hm^2),B2(施碳铵,821.4 kg/hm^2),B3(施碳铵,1 231.65 kg/hm^2... 为更好地指导桂牧一号杂交象草的优质高产栽培,设7个处理,分别为:A1(施尿素,150 kg/hm^2),A2(施尿素,300 kg/hm^2),A3(施尿素,450 kg/hm^2),B1(施碳铵,411.3 kg/hm^2),B2(施碳铵,821.4 kg/hm^2),B3(施碳铵,1 231.65 kg/hm^2),CK(不施氮肥),用体外产气法测定了不同氮肥及施氮水平下桂牧一号杂交象草的产气量以及干物质和有机物的体外消失率.结果表明:各处理组牧草间产气动力学参数差异显著(P〈0.05),理论最大产气量、产气速率常数、产气延滞时间和干物质体外消化率分别以处理B1,B1,A3和B1最高,而以处理A1,A1,B2和B3最低.相关性分析表明,理论最大产气量与产气速率呈显著正相关,干物质、有机物体外消失率与中性洗涤纤维含量呈显著正相关,干物质体外消化率与牧草中磷含量呈显著负相关,产气速率与延滞时间之间的相关不显著,其他各参数与营养成分之间的相关性较低.从桂牧一号杂交象草体外发酵的特性来看,施用碳铵要优于尿素,碳铵的施用量以411-821 kg/hm^2较为适宜. 展开更多
关键词 氮肥 体外干物质消失率 体外产气法 桂牧一号杂交象草
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刈割时间对桂牧一号杂交象草生长性能和品质的影响 被引量:2
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作者 孟可爱 刘小飞 《湖北农业科学》 北大核心 2013年第2期384-386,共3页
采用单因素随机试验设计,研究了不同刈割时间对桂牧一号杂交象草(Hybrid Pennisetum ur-pureum Guimu-1)生长性能和品质的影响。结果表明,60 d刈割桂牧一号的株高、叶长、叶宽、分蘖数、茎叶比最高,显著高于其他处理;鲜草、干草、粗蛋... 采用单因素随机试验设计,研究了不同刈割时间对桂牧一号杂交象草(Hybrid Pennisetum ur-pureum Guimu-1)生长性能和品质的影响。结果表明,60 d刈割桂牧一号的株高、叶长、叶宽、分蘖数、茎叶比最高,显著高于其他处理;鲜草、干草、粗蛋白和粗纤维总产量以60 d刈割最高,分别为5 526.6 kg/667m2、1 005.9 kg/667m2、128.8 kg/667m2和298.8 kg/667m2;干草中粗蛋白含量为40 d刈割>50 d刈割>60 d刈割,粗纤维含量则相反。 展开更多
关键词 桂牧一号杂交象草(Hybrid PENNISETUM urpureum guimu-1) 农艺性状 产草量 草品质
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Comparative Study of Three Warm-season Forage Varieties in Southern China 被引量:2
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作者 Sun Ao Deng Huifen +3 位作者 Li Caijun Jiang Guitao Zhang Xu Li Jianbo 《Animal Husbandry and Feed Science》 CAS 2019年第3期119-121,共3页
The plant height,tiller number,yield of three warm-season forage varieties in Southern China were studied for consecutive two years.The result showed that the three varieties all adapted to the environmental condition... The plant height,tiller number,yield of three warm-season forage varieties in Southern China were studied for consecutive two years.The result showed that the three varieties all adapted to the environmental conditions.The annual fresh grass yield of Pennisetum purpureum Schum ev.Taiwan,Guimu-1 hybrid P.purpureum and P.sinese Roxb were 220.85,163.18,186.20 t/hm^2;the crude protein content were 17.39%,19.02%and 20.91%;the crude fat content were 6.37%,5.37%and 4.69%;and the crude fiber content were 33.49%,32.22%and 33.58%,respectively.P.purpureum Schum ev.Taiwan had stronger cold resistance,fast growth after overwintering and strong resistance,and no plant diseases and insect pests were found during the test.P.purpureum Schum ev.Taiwan is a high yield and high quality forage variety,which is worth popularizing and applying. 展开更多
关键词 PENNISETUM purpureum Schum ev.Taiwan guimu-1 hybrid P.purpureum P.sinese Roxb Production performance
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