射阳县蚕种行业面临的困境与对策

<正>射阳县是全国闻名的优质蚕茧生产基地,县级蚕桑生产规模列江苏省第三位、盐城市第二位。全县现有桑园4000hm~2(6.0万亩),年发种量18万张左右,年产鲜茧7000t,年蚕桑产值近4亿元。全县有蚕桑产业的乡镇10个,桑园面积66.7hm~2(0.1万亩)以上的村16个,蚕桑产业基     

宝应县蚕桑生产面临的问题和对策

1历史简要回顾 宝应县地处苏中里下河地区.素有"鱼米荷藕之乡"之称,全县总人口92万人,其中农业人口75万人,耕地9.13万hm2,农业生产"四水"(水稻、水产、水禽、水生蔬菜)特色明显.种植业以稻麦为主,荷藕次之,旱地作物较少.栽桑养蚕是宝应县一项传统项目.1956年开始成片栽植湖桑9.8hm2,到1986年全县桑园面积达到866hm2,蚕茧产量458t.进入上世纪80年中后期到90年代前期的近10年间,全县蚕桑生产进入大发展时期,桑园面积迅速扩大,蚕茧产量大幅上升,1994年桑园面积达到2951hm2,1995年饲养蚕种78184张,蚕茧产量达到2152t,均达到历史最高点.随着生产规模的扩大,蚕茧收购加工业也得到快速发展,到1995年全县有3家缫丝厂,固定资产2061万元,拥有自动缫12组,立缫车300台,年产白厂丝390t,有蚕茧收烘站22座,茧灶61副.     

磐安县大棚养蚕初探

磐安县栽桑养蚕历史悠久,从20世纪80年代开始发展较快,蚕桑生产成为磐安农村经济的一大主要产业,桑蚕茧曾是磐安农业“四龙(香菇、蚕茧、茶叶、水稻)”之一。今年春茧全县养蚕农户达1438户,养蚕种2848张。全县桑园面积321hm2,其中成年桑园147hm2。为了改变传统的小农经济养蚕模式,提高栽桑养蚕的经济效益,增加蚕农收入,磐安县蚕桑专业合作社于去年组织技术人员、养蚕大户代表专程赴山东考察“3+1(3亩———约2000m2桑园加1个大棚养蚕)”新模式,并结合当地实际,当年夏、秋期即在冷水镇的冷水、小章村开展这一大棚养蚕新模式的初步探索,并在今…     

抓好技术培训促进蚕桑发展

蚕桑生产是淳安县传统优势产业,是农民家庭收入的主要来源,是有效解决农村中、老年劳动力出路的重要途径.全县30个乡镇都有蚕桑生产,共有2.36万户种桑养蚕农,约占全县总农户的1/5.拥有桑园4 520hm2,其中连片大田种桑面积2 800hm2,建成了唐村、浪川和梓桐3个千亩(66.7hm2)蚕业示范园区,2004年饲养蚕种12.16万张,生产蚕茧预计5 000t,蚕茧产值1亿元,蚕桑产值1.3亿元,蚕茧质量连续8年名列浙江省前茅,"千岛湖"品牌茧被浙江省技术监督局认定为浙江名牌产品.     

贵池蚕桑生产现状及发展建议

1蚕桑基本概况 1.1蚕桑生产在大力发展开发性农业的1995年,贵池区蚕桑生产出现了前所未有的辉煌,桑园面积达到3800hm2,年发种量突破1万张,年产蚕茧325t.     

加快恢复与发展全南蚕桑生产的思考

1　全南县蚕桑的简要回顾全南县地处江西省最南端 ,是个边远山区小县 ,全省重点蚕桑基地县。 80年代末以来 ,蚕桑已成为全县的支柱产业。 1984年 ,全县蚕桑生产以 8户农户 ,8亩桑园起家 ,经过 17年风风雨雨 ,蚕桑生产几经起伏。 1992～ 1994年是全南县蚕桑业鼎盛时期 ;1992年全县种桑养蚕发展到 18个乡 (镇 )场 ,99个村 ,10 2 4 3户 ,桑园面积 175 4 2亩 ,养蚕 4 130 2张 ,产鲜茧 966吨 ,产值 92 7 36万元 ;1994年 ,蚕桑呈现产量和效益同步增长的良好态势 ,投产桑园 82 10亩 ,养蚕 38374张 ,产鲜茧 110 1吨 ,全县 5 987户蚕农 ,户平蚕茧收入 2 75 9元 ;县缫丝厂生产白厂丝 93 2吨 ,实现工业产值 1675 5 0万元 ,创税利 199 2万元。但是由于前几年茧丝绸行情滑坡 ,我县蚕种饲养量 ,鲜茧产量也逐年下降 ,蚕桑生产面临着种种问题。1996年全县投产桑园 5 188亩 ,养蚕 175 81张 ,产鲜茧 65 6吨 ;1997～ 2 0 0 0年 ,蚕桑生产步入低谷 ,每年在养蚕 85 0 0张、...     

睢宁县蚕桑生产的发展与对策

1睢宁县茧丝绸生产情况1.1蚕桑生产稳步发展目前睢宁县共有桑园4667hm2,90%以上的桑园分布在桃园、李集、姚集、凌城、双沟等5个重点镇(其中桃园2333hm2,姚集667hm2,李集533hm2,凌城、双沟各333hm2)。2004年全县饲养蚕种10.1万张,生产蚕茧3550t,蚕农茧款总收入近6000万元。2005     

贵池蚕桑生产现状及发展

1蚕桑基本概况1.1蚕桑生产 在大力发展开发性农业的1995年.贵池区蚕桑生产出现了前所未有的辉煌,桑同面积达到:3800hm2,年发种量突破1万张,年产蚕茧325t。1996～1997年的蚕桑低潮造成了大面积毁桑现象的发生.虽经近几年的恢复性发展,全区桑园面积仍只有440hm2、其中100hm2为低产桑同、110hm2为荒芜桑园。2001年冬以来,共调进桑苗70万株,新发展桑园67hm2。2001年共养蚕4600张,产鲜茧164t。2002年发放春蚕种2700张,比上年春季增加200张,增长8％。     

对提高茧质的认识和体会

淳安县是浙江省四大蚕桑重点产区之一.随着省"蚕桑西进"工程的实施和茧丝绸行情的逐步回升,蚕桑生产出现了良好的发展势头.目前,全县有30个乡(镇)、610个村、24 300户种桑养蚕.2003年和2004年两年共发展大田种桑1 867hm2.目前全县拥有桑园面积4 250hm2.2004年全县蚕茧产量突破5 000t,产值超亿元,蚕桑已成为该县农民的重要收入之一,并提出了到2007年实现桑园面积6 667hm2,产茧1万t,全行业产值10亿元,即"10110"工程和打造"中国蚕桑之乡",构建中国茧丝绸强县这一宏伟目标.     

富顺县蚕桑产业现状和发展思路

蚕桑是富顺县传统特色优势产业。截止2019年底,全县有桑园面积2.4万亩(1600hm2),其中果叶兼用桑0.3万亩(200hm2),栽桑养蚕镇乡14个。年养蚕1.5万张,蚕茧单产达到39kg/张,蚕茧综合均价为41元/kg,张种养蚕收入1600元,蚕农售茧收入2400万。我县自贡裕民蚕种场年生产蚕种10万张,居全省普种生产第三位,蚕种产值550万元。     

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.

     

Heartworm in dogs in Canada in 1988

In late November 1988, 1581 small and mixed animal clinics and institutional veterinarians across Canada were sent a questionnaire in order to assess the status of Dirofilaria immitis in Canada in 1988, and 46% of them responded. Veterinarians reported that 181,577 dogs were blood-tested for heartworm disease and 367 dogs were found with D. immitis microfilariae. Another 60 dogs were amicrofilaremic but diagnosed with heartworm disease to give the total number of cases diagnosed in 1988 as 441 (0.24%).     

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 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 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 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.