为了筛选出适宜在黑龙江寒地黑土区种植的优质燕麦品种,试验以10种优质燕麦为引种材料,采用随机区组设计,在燕麦蜡熟期进行干草产量测定,采用近红外光谱分析技术测定燕麦粗蛋白(CP)、粗脂肪(EE)、粗灰分(Ash)、干物质(DM)、酸性洗涤纤维...为了筛选出适宜在黑龙江寒地黑土区种植的优质燕麦品种,试验以10种优质燕麦为引种材料,采用随机区组设计,在燕麦蜡熟期进行干草产量测定,采用近红外光谱分析技术测定燕麦粗蛋白(CP)、粗脂肪(EE)、粗灰分(Ash)、干物质(DM)、酸性洗涤纤维(ADF)、中性洗涤纤维(NDF)、30 h NDF可消化率(30 h dNDF)和48 h体外干物质不可消化率(48 h IVDMD)等营养指标,计算其相对饲喂价值(RFV)、相对饲草品质(RFQ)、总可消化养分(TDN)和产奶净能(NEL),并采用灰色关联度分析方法对产量和营养指标进行综合评价。结果表明:林纳燕麦(Avena sativa L. Lena)的干草产量为9 593.23 kg/hm~2,显著高于其他品种(P<0.05);莫妮卡燕麦(Avena sativa L. Monida)的CP含量最高,青引1号燕麦(Avena sativa L. Qingyin No.1)的DM、ADF和NDF含量最高;定燕2号燕麦(Avena sativa L. Dingyan No.2)的RFV、RFQ、TDN和NEL最高。RFV、RFQ、TDN和NEL均与ADF和NDF呈极显著负相关(P<0.01),与48 h IVDMD呈极显著正相关(P<0.01),与干草产量、CP、DM相关性不显著(P>0.05);定燕2号燕麦的加权关联度最高。说明定燕2号燕麦综合值最高,营养品质最好,可作为该地区的优质燕麦品种推广种植。展开更多
Feed-animal balance is the key technique on the grassland ecosystem management,and attracts widespread attention in the world.Many studies have been conducted by former researchers,and most of their efforts were inten...Feed-animal balance is the key technique on the grassland ecosystem management,and attracts widespread attention in the world.Many studies have been conducted by former researchers,and most of their efforts were intended to keep the balance of feed-animal.However,there are still much more issue needed to be studied in details on the face of grassland degeneration and animal husbandry sustainable development.The author analyzed the feed-animal balance research progress,including the concept of stocking rate and its practical management techniques,especially on the stocking rate calculation methods.In addition,the social and economy effects on feed-animal balance were also discussed during the progress of improving the development of pastoral economy.In order to achieve feed-animal balance more effectively,it was concluded that the focus must be shift from only on animal number to the grassland quality,and it's necessary to strengthen market tax control.展开更多
In order to investigate the effect of meteorological factors on the yield and quality of special rice during the filling stage, an experiment was conducted with 10 special rice varieties which were planted in three di...In order to investigate the effect of meteorological factors on the yield and quality of special rice during the filling stage, an experiment was conducted with 10 special rice varieties which were planted in three different regions during spring 2017. The results showed that the quality traits and yields from different regions of the same variety were different, which reached up to a significant level in most varieties. Among the quality traits, the grain chalkiness rate and chalkiness degree were the most sensitive to different climatic factors, and changes were found among them in different regions, while minor variation was found between brown rice rate and white rice rate. The parameters that were severely affected by temperature were gel consistency, gelatinization temperature, brown rice rate and yield during the filling stage. The critically affected factors by heat were brown rice rate, protein content, essential amino acid and amylose content while brown rice rate, chalkiness rate and gelatinization temperature were substantially affected by water factors. Grain yield and quality were closely related to meteorological factors on different stages after heading. Our results revealed that yield and quality of special rice were significantly influenced by meteorological factors during the grain filling stage.展开更多
文摘为了筛选出适宜在黑龙江寒地黑土区种植的优质燕麦品种,试验以10种优质燕麦为引种材料,采用随机区组设计,在燕麦蜡熟期进行干草产量测定,采用近红外光谱分析技术测定燕麦粗蛋白(CP)、粗脂肪(EE)、粗灰分(Ash)、干物质(DM)、酸性洗涤纤维(ADF)、中性洗涤纤维(NDF)、30 h NDF可消化率(30 h dNDF)和48 h体外干物质不可消化率(48 h IVDMD)等营养指标,计算其相对饲喂价值(RFV)、相对饲草品质(RFQ)、总可消化养分(TDN)和产奶净能(NEL),并采用灰色关联度分析方法对产量和营养指标进行综合评价。结果表明:林纳燕麦(Avena sativa L. Lena)的干草产量为9 593.23 kg/hm~2,显著高于其他品种(P<0.05);莫妮卡燕麦(Avena sativa L. Monida)的CP含量最高,青引1号燕麦(Avena sativa L. Qingyin No.1)的DM、ADF和NDF含量最高;定燕2号燕麦(Avena sativa L. Dingyan No.2)的RFV、RFQ、TDN和NEL最高。RFV、RFQ、TDN和NEL均与ADF和NDF呈极显著负相关(P<0.01),与48 h IVDMD呈极显著正相关(P<0.01),与干草产量、CP、DM相关性不显著(P>0.05);定燕2号燕麦的加权关联度最高。说明定燕2号燕麦综合值最高,营养品质最好,可作为该地区的优质燕麦品种推广种植。
基金The National Special Research Fund for Non-Profit Sector."Carrying Capacity and Livestock in Different Places"(200903060)"Re-search and Demonstration of Resources Optimization in Family Farmland"(201003019)+1 种基金"Research and Demonstration of Nurture of Natural Grassland and Used Technology in Semi-arid Farmland"(201303060)National Forage Industry Technological System(CARS-35)
文摘Feed-animal balance is the key technique on the grassland ecosystem management,and attracts widespread attention in the world.Many studies have been conducted by former researchers,and most of their efforts were intended to keep the balance of feed-animal.However,there are still much more issue needed to be studied in details on the face of grassland degeneration and animal husbandry sustainable development.The author analyzed the feed-animal balance research progress,including the concept of stocking rate and its practical management techniques,especially on the stocking rate calculation methods.In addition,the social and economy effects on feed-animal balance were also discussed during the progress of improving the development of pastoral economy.In order to achieve feed-animal balance more effectively,it was concluded that the focus must be shift from only on animal number to the grassland quality,and it's necessary to strengthen market tax control.
文摘In order to investigate the effect of meteorological factors on the yield and quality of special rice during the filling stage, an experiment was conducted with 10 special rice varieties which were planted in three different regions during spring 2017. The results showed that the quality traits and yields from different regions of the same variety were different, which reached up to a significant level in most varieties. Among the quality traits, the grain chalkiness rate and chalkiness degree were the most sensitive to different climatic factors, and changes were found among them in different regions, while minor variation was found between brown rice rate and white rice rate. The parameters that were severely affected by temperature were gel consistency, gelatinization temperature, brown rice rate and yield during the filling stage. The critically affected factors by heat were brown rice rate, protein content, essential amino acid and amylose content while brown rice rate, chalkiness rate and gelatinization temperature were substantially affected by water factors. Grain yield and quality were closely related to meteorological factors on different stages after heading. Our results revealed that yield and quality of special rice were significantly influenced by meteorological factors during the grain filling stage.
