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1 我县蚕业现状我县栽桑养蚕历史悠久 ,这一古老而传统的产业为我县城乡经济的发展创造了辉煌的业绩。初步统计 ,自 1 983年组建县丝绸公司至今 ,全县累计养蚕 83.74万张 ,收茧1 6 2 7.89万kg ,蚕农收入茧款 1 3587.89万元。 1 995年是 2 0世纪蚕桑生产发展的鼎盛时期 ,养蚕 7.6 6万张 ,产茧 1 4 5万kg ,农民茧款收入 1 336万元。但近年来 ,我县蚕桑生产逐渐萎缩 ,2 0 0 2年发种 2 .3万张 ,产茧 6 0万kg ,蚕农茧款收入 6 0 0万元 ,分别是最高年景的 30 %、4 1 .3%、4 5% ,蚕业的发展步入困境。1 .1 产业模式落后嫘祖教民养蚕的传说 ,说明… 相似文献
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<正> 我区是全省和国家的蚕丝生产基地之一,植桑育蚕历史悠久,蚕丝是全区经济的一项拳头商品。1985年全区养蚕808559张,产茧22502吨,收入茧款7000多万元,加上副产物收入近一亿元,目前已有51个丝绸企业,形成了桑、蚕、种、茧、丝、绸、印染、服装“一条龙”的生产体系。蚕丝行业每年向财政上缴税利3000—4000万元,年产厂丝3100吨,占全省31.6%,丝织品共2700多万米, 相似文献
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我国加入WTO将给蚕丝绸行业发展带来机遇和挑战 ,面对经济全球化的竞争 ,将如何提高我区蚕丝业的发展 ,迎接市场挑战 ,是不能回避的问题。我区养蚕历史悠久 ,计划经济时代 ,在历届政府的高度重视下 ,我区蚕丝业发展由小到大 ,由弱变强 ,历史上 1 994年发种达 1 5万张 ,产茧 7万担 ,农民茧款收入 4 0 0 0多万元 ,是四川省重庆市的先进县之一。但随着市场经济的不断深入和发展 ,在计划经济向市场经济转轨的过程中 ,由于丝绸行业防范风险机制较弱。从 1 996年起蚕业形势下降 ,造成蚕农挖桑 ,使我区蚕业一直在低水平徘徊。今年全区发蚕种只有… 相似文献
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<正> 南部县碾垭乡佛祖沟村八社养蚕专业户罗先锋,在1987年养蚕50张,产茧1.7吨,养蚕(包括共育小蚕)收入1.6万元的基础上,1988年更上一层楼,全年养蚕75张,产茧2168公斤,收入茧款16,542元,加上三季共育小蚕411.5张,收共育费4050元,全年养蚕与共育小蚕合计收入20592元,人平5148元。同时,今年 相似文献
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1、韦友江 ,租用农户土地 1 0 0亩 ,种下桑苗 84亩 ,请工 1 4人 ,2 0 0 1年投产 ,当年养蚕 1 1批 ,饲养蚕种 336张 ,产茧 1 1 76 0公斤 ,产值 1 6 .93万元 ;2 0 0 2年上半年养蚕 7批 ,饲养蚕种2 0 1张 ,产茧 76 6 0公斤 ,产值 8.1万元。2、韦顶雪 ,流河乡落漏村孟山屯人 ,种桑 1 6亩 ,家庭人口 5人 ,劳动力 2人 ,基本不请工 ,2 0 0 1年养蚕 57.5张 ,产鲜茧 2 30 0公斤 ,产值达 3.3万元 ,人均养蚕收入 6 6 2 4元 ,2 0 0 2年上半年养蚕 4 2张 ,产鲜茧 1 6 80公斤 ,产值 1 .8万元 ,人均养蚕收入 36 0 0元。3、都安县澄江乡合建村黄宗明 2 0 0 0… 相似文献
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2001年初,国家科技攻关计划<西南地区蚕业高新技术配套开发与示范课题>在铜梁县开始实施,大庙镇石院村2社被定为实施示范社.全社36户、125人,其中在家务农的31户、104人.有耕地6.47hm2,其中田3.3hm2、土3.1hm2.在课题实施前的2000年,全社有桑树32 000余株,其中小桑园1.3hm2、18 000余株,年养蚕120张、产茧3 500 kg、收入42 360元,单张产29.2kg、收入353元.从2001年开始大育苗、大栽桑,大力引进蚕桑新品种,积极推广养蚕新技术,到2003年发展到全社养蚕223.6张、产茧7 678kg、收入92 136元,单张产茧34.3kg、收入412.06元.全社户平养蚕7.2张、收入2 972.1元.课题实施3年来,增加养蚕103.6张、增产蚕茧4 086kg、增加收入49 776元,分别增长86.3%、115.8%、117.5%.单张产茧增加5.1kg、增收59.06元,分别增长17.5%和16.7%.全社实现年667m2桑养蚕3.1张、养蚕直接收入1 279.66元.现将该社实施蚕业课题的情况小结如下. 相似文献
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Evidence for the non-involvement of the uterus in the lifespan of the corpus luteum in the cyclic dog 总被引:1,自引:0,他引:1
Progesterone levels in peripheral blood of dogs were analysed during the cycle in which hysterectomy (n = 5) or sham surgery (n = 3) was performed as well as during the cycle of dogs (n = 5) hysterectomized at least one year prior to this study; the data were compared with the findings in control dogs (n = 3). The averages of the duration of the luteal period observed in the three experimental groups were not significantly different from those of control dogs. Immediately after surgery, the progesterone level decreased from 25 to 50% of the presurgical level, but returned to presurgical level in about four days. Prolactin levels were elevated for about 30 h after surgery. Nevertheless, the averages of the mean prolactin levels for each animal during the luteal period of the experimental groups were not significantly different from those of control dogs. It is concluded that in the dog, the uterus is not involved in the lifespan of the cyclic corpus luteum. 相似文献
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Meschan EM Peham C Schobesberger H Licka TF 《Veterinary journal (London, England : 1997)》2007,173(3):578-584
As there is no statistical evidence that saddle fit influences the load exerted on a horse's back, this study was performed to assess the hypothesis that the width of the tree significantly alters the pressure distribution on the back beneath the saddle. Nineteen sound horses were ridden at walk and trot on a treadmill with three saddles differing only in tree width. Kinetic data were recorded by a sensor mat. A minimum of 14 motion cycles were used in each trial. The saddles were classified into four groups depending on fit. For each horse, the saddle with the lowest overall force (LOF) was determined. Saddles were classified as "too-narrow" if they were one size (2 cm) narrower than the LOF saddle, and "too-wide" if they were one size (2 cm) wider than the LOF saddle. Saddles two sizes wider than LOF saddles were classified as "very-wide". In the group of narrow saddles, the pressure in the caudal third (walk 0.63 N/cm(2)+/-0.10; trot 1.08 N/cm(2)+/-0.26) was significantly higher compared to the LOF saddles (walk 0.50 N/cm(2)+/-0.09; trot 0.86 N/cm(2)+/-0.28). In the middle transversal third, the pressure of the wide saddles (walk 0.73 N/cm(2)+/-0.06; trot 1.52 N/cm(2)+/-0.19) and very-wide saddles (walk 0.77 N/cm(2)+/-0.06; trot 1.57 N/cm(2)+/-0.19) was significantly higher compared to LOF saddles (walk 0.65 N/cm(2)+/-0.10/ 0.63 N/cm(2)+/-0.11; trot 1.33 N/cm(2)+/-0.22/1.27 N/cm(2)+/-0.20). This study demonstrates that the load under poorly fitting saddles is distributed over a smaller area than under properly fitting saddles, leading to potentially harmful pressures peaks. 相似文献
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嗅源是军犬嗅觉作业训练的依据.军犬鉴别中嗅源能力的培养在整个鉴别训练中占有重要地位,关系到鉴别训练的成败和鉴别能力的提高.所以,军犬在嗅认嗅源时必须按照训犬员的指令充分、细致地感受嗅源气味,并且对嗅源气味产生兴奋反应.如何培养军犬充分嗅认嗅源以及及时解决嗅认过程中出现的问题,成为我们进行鉴别训练的关键.…… 相似文献
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