金荞麦鲜草高产栽培技术研究

利用正交试验设计研究播种密度和氮磷钾肥对金荞麦鲜草产量的影响及其生产经济效益,结果表明:适宜的播种密度和氮磷钾肥合理施用能显著提高金荞麦的鲜草产量,增产效果依次为:磷钾肥>播种密度>氮肥,磷钾肥和播种密度对金荞麦产量影响明显。综合各处理的产量和经济效益,金荞麦的高产栽培方案为:种植密度株行距40 cm×60 cm,氮肥10 kg/667 m2,磷肥15 kg/667 m2和钾肥21 kg/667 m2。     

氮磷钾配施对黔金荞麦1号块茎产量影响

为提高黔金荞麦1号块根产量,进行氮磷钾配合施肥试验,结果表明:氮磷钾配施可有效提高黔金荞麦1号的块根产量,N、P、K肥用量分别为6、15、15 kg/667 m2配合施用生产黔金荞麦1块根,栽培2年产量可达311.8 kg/667 m2,具有较高的经济效益。     

2009年安徽省岳西县青天乡杂交中稻"3414"肥料效应田间试验报告

通过"3414"回归最优设计原理设置的中稻肥效试验结果,获得肥料效应函数方程,并由该数学模型得出理论氮、磷、钾最高产量施肥量,其中,N为9.97 kg/667m2,P2O5为4.90 kg/667m2、K2O为8.79 kg/667m2,最高产量495.13 kg/667m2.理论氮、磷、钾最佳效益施肥量,其中,N为8.58 kg/667m2, P2O5为3.66 kg/667m2,K2O为7.99 kg/667m2,最佳效益产量489.91 kg/667m2.综合分析不同推荐施肥方法的推荐施肥量,结合当地农业生产实际,氮、磷、钾建议推荐量分别为纯N为8.6 kg/667m2、P2O5为3.7 kg/667m2、K2O为8.0 kg/667m2.     

不同施氮水平对矮象草产量和品质的影响

研究施氮水平为0、38.85kg/667m2、58.35kg/667m2、77.7kg/667m2、97.2kg/667m2、116.55kg/667m2、136.05kg/667m2时,测定矮象草(Pennisetum Purpureum)的株高、分蘖个数、鲜草产量,分析矮象草的营养品质(粗蛋白、粗纤维、粗灰分、干物质量),结果表明,矮象草的产量随着施氮量的增加而增加,营养品质也明显提高,当施氮量为97.2kg/667m2,矮象草经济效益达到最佳。     

贵州金荞麦块根中表儿茶素含量的测定及分析

为了解贵阳地区不同生长年限的黔中金荞麦和贵州不同产地的野生金荞麦块根中表儿茶素含量,利用高效液相色谱法进行检测分析.结果:2年生黔中金荞麦的表儿茶素含量为349.48μg/g,达到《中华人民共和国药典》要求;贵州不同产地的野生金荞麦表儿茶素含量差异较大,丹寨县的野生金荞麦表儿茶素含量最高,达到590.89μg/g,可作...     

2009年安徽省岳西县青天乡杂交中稻“3414”肥料效应田间试验报告

通过“3414”回归最优设计原理设置的中稻肥效试验结果,获得肥料效应函数方程,并由该数学模型得出理论氮、磷、钾最高产量施肥量,其中,N为9．97kg／667m2,P2O5为4．90kg／667m2,K20为8．79kg／667m2,最高产量495．13kg／667m2。理论氮、磷、钾最佳效益施肥量,其中,N为8．58kg／667m2,P2O5为3．66kg／667m2,K2O为7．99kg／667m2,最佳效益产量489．91kg／667m2。综合分析不同推荐施肥方法的推荐施肥量,结合当地农业生产实际,氮、磷、钾建议推荐量分别为纯N为8．6kg/667m2,P2O5为3．7kg/667m2、K20为8．0kg／667m2。     

贵草1号多花黑麦草密度和施肥研究

通过对贵草1号多花黑麦草的不同密度和施肥量对其鲜草产量和牧草高度的影响研究,结果表明:在不同密度和施肥量条件下,贵草1号多花黑麦草的产量和生长高度有显著差异,当施基肥为有机肥1000kg/667m2+尿素10kg/667m2,行距为20cm时,贵草1号生长速度最快,平均高度最高,达到64.2cm,鲜草产量最高,达到3164kg/667m2。     

贵草1号多花黑麦草密度和施肥研究

通过对贵草1号多花黑麦草的不同密度和施肥量对其鲜草产量和牧草高度的影响研究,结果表明:在不同密度和施肥量条件下,贵草1号多花黑麦草的产量和生长高度有显著差异,当施基肥为有机肥1000kg/667m2+尿素10kg/667m2,行距为20 cm时,贵草1号生长速度最快,平均高度最高,达到64.2 cm,鲜草产量最高,达到3 164 kg/667m2.     

黔草2号苇状羊茅生产试验报告

2000～2007年对黔草2号苇状羊茅的生物学特性、生产性能及适应性等进行观测,用国外引进并登记品种法恩(Fawn)苇状羊茅作为对照,经几年的试验结果表明:黔草2号苇状羊茅的鲜草产量(5 494.16 kg/667m2)、干草产量(1 359.14 kg/667m2)及种子产量(49.56 kg/667.m2)均高于对照法恩,分别增产55.61%、69.43%和49.32%,达极显著水平,为黔草2号苇状羊茅在生产上大面积推广种植提供了必要的技术依据.     

四个草莓品种在桂西南地区的引种试种

引进了四个美国草莓品种：甜查理、斯坦勒、莫哈维和本妮西亚,并对它们综合性状进行对比分析。结果表明,本妮西亚的产量1706.3kg/667m2,显著高于其它三个品种,适于在桂西南地区进行推广种植;甜查理和莫哈维的产量分别为1394.8kg/667m2和1517.5kg/667m2,可作备选品种;斯坦勒的产量为977.3kg/667m2,不适于在桂西南地区大面积种植。     

Heartworm in dogs in Canada in 1989

In late November 1989, 1732 clinics and institutional veterinarians were sent a questionnaire to assess the status of Dirofilaria immitis, and 51.7% responded. Of 247,716 dogs tested, 394 had D. immitis microfilariae and 51 were amicrofilaremic for a total of 445 cases and heartworm prevalence of 0.17%. Most (408) of these dogs had no preventive medication and the prevalence among dogs tested and unprotected was 1.01%. That prevalence was considerably higher in endemic areas. Thirty-seven dogs with heartworm had preventive medication. Heartworm was most frequent in companion dogs over three years of age maintained outdoors in rural areas. About 75% of the cases had never left Canada, 26% had clinical signs and 125 were not treated.

Heartworm was reported from British Columbia, Manitoba, Ontario, Quebec, Nova Scotia and Newfoundland, but 383 cases were in Ontario. South-western Ontario was the primary focus of infection. There were 33 cases in Quebec and 24 in Manitoba, mainly found in and around Metropolitan Montreal and Winnipeg respectively.

     

Heartworm in dogs in Canada in 1987

In late November 1987, 1246 institutional veterinarians and small and mixed animal clinics across Canada were sent a questionnaire in order to assess the status of Dirofilaria immitis in Canada in 1987, and 50% of them responded. Veterinarians reported that 165,428 dogs were blood tested for heartworm disease and 511 dogs were found with D. immitis microfilariae. Another 78 dogs were amicrofilaremic but diagnosed with heartworm disease to give the total number of cases diagnosed in 1987 as 589 (0.35%).     

Heartworm in dogs in Canada in 1986

In late December 1986, 1224 institutional veterinarians and small and mixed animal clinics across Canada were sent a questionnaire in order to assess the status of Dirofilaria immitis in Canada in 1986; 46% of them responded. Veterinarians reported that 150,989 dogs were blood-tested for microfilariae and 869 dogs were found with heartworm. Another 65 dogs were amicrofilaremic but diagnosed with heartworm disease and one was found with heartworm at necropsy to give the total number diagnosed in 1986 as 935 (0.62%).

Heartworm was reported from Manitoba, New Brunswick, Ontario and Quebec, but most (810) of the cases were from Ontario. South-western Ontario continued to be the primary focus of the infection in Canada. There were 103 cases reported from Quebec, mostly from and around Montreal, and 21 cases from Manitoba, from Winnipeg and surrounding areas. Heartworm was found most frequently in companion dogs over three years of age maintained mainly outdoors in rural areas. About 33% of the cases were observed with clinical signs of heartworm disease and 81% had a history of not having left Canada.

     

Heartworm in dogs in Canada in 1984

In late December 1984, 1853 institutional veterinarians and small and mixed animal clinics across Canada were sent a questionnaire in order to assess the status of Dirofilaria immitis in Canada in 1984 and 35% of them responded. Veterinarians reported that 97,794 dogs were blood-tested to check for microfilariae and 1417 dogs (1.45% of those tested) were found with heartworm. Another 34 dogs were amicrofilaremic, but were diagnosed as having heartworm disease, to give the total number diagnosed in 1984 as 1451 (1.48%). Heartworm was reported from all provinces except Prince Edward Island and Newfoundland but most (1310) of the cases were in Ontario. In Quebec, 126 cases were reported mostly from west of Montreal.

Heartworm was found most frequently in companion dogs over three years of age maintained mainly outdoors in rural areas. About 27% of the cases were observed with clinical signs of heartworm disease and 72% had a history of not having left Canada. Southwestern Ontario continued to be the primary focus of the infection.

     

Heartworm in dogs in Canada in 1983

In late December 1983, 2 800 veterinarians across Canada were sent a questionnaire in order to assess the status of heartworm disease in Canada in 1983 and 26% of them responded. Veterinarians reported that 59 504 dogs were blood-tested to check for microfilariae and 771 dogs (1.30% of those tested) were found with Dirofilaria immitis. Heartworm disease was diagnosed in all provinces except New Brunswick and Newfoundland but most (733) of the cases were in Ontario.

Heartworm disease was found most frequently in companion dogs over three years of age maintained mainly outdoors in rural areas. About 31% of the cases were observed with clinical signs of heartworm disease and 64% had a history of not having left Canada. Southwestern Ontario continues to be the focus of the infection and most of the dogs there had not left the province previously.

     

Heartworm in dogs in Canada in 1991

In late November 1991, 1883 clinics in Canada were sent a questionnaire to assess the status of Dirofilaria immitis in dogs in 1991 and there was a 60.0% response. There were 344,031 dogs tested for heart-worm (HW), 627 were found infected and the prevalence of HW infection was 0.18%. There were 417 dogs with HW in Ontario, 116 in Manitoba, 38 in Quebec, 53 in British Columbia, three in Alberta, and one in Nova Scotia. In British Columbia, all of the infected dogs but one were from the Okanagan valley which, as from 1991, is a new focus of infection in Canada. Most dogs with HW had not been on preventive medication in 1990, and the prevalence among dogs tested and unprotected was 0.59%. That prevalence was considerably higher in endemic areas. Companion dogs, over three years of age and maintained primarily outdoors in rural areas, were most frequently infected. One cat was diagnosed with D. immitis and 33 dogs had Dipetalonema reconditium.     

Heartworm in dogs in Canada in 1985

In late December 1985, 1485 institutional veterinarians and small and mixed animal clinics across Canada were sent a questionnaire in order to assess the status of Dirofilaria immitis in Canada in 1985 and 44% of them responded. Veterinarians reported that 137,300 dogs were blood-tested to check for microfilariae and 1210 dogs were found with heartworm. Another 36 dogs were amicrofilaremic but diagnosed with heartworm disease to give the total number diagnosed in 1985 as 1247 (0.91%).

Heartworm was reported from all provinces except Prince Edward Island, Newfoundland and Saskatchewan but most (1126) of the cases were in Ontario. Southwestern Ontario continued to be the primary focus of the infection in Canada. From Quebec, 91 cases were reported mostly from and around Montreal. From Manitoba, 19 cases were reported from Winnipeg and surrounding areas. Heartworm was found most frequently in companion dogs over three years of age maintained mainly outdoors in rural areas. About 28% of the cases were observed with clinical signs of heartworm disease and 78% had a history of not having left Canada.