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盐城市蚕桑生产现状与发展对策 总被引：4，自引：2，他引：2
近阶段盐城市的蚕桑生产已与农业结构调整融为一体,蚕业产业化显示出旺盛的生命力和巨大的优越性,为农村经济的发展注入了新的潜力.全市现有桑园面积1.65万hm2,生产蚕茧2.3万t,是全国优质蚕茧基地之一,用不足全国3%的桑园生产占全国5%的蚕茧. 相似文献
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近几年来,在区党委、区人民政府的领导下,在各级领导、专家的大力支持下,在广西蚕业工作者的共同努力及兄弟省区的大力协助下,广西蚕业得到了前所未有的大发展。2002年全区桑园面积80万亩,蚕茧产量7.4万吨(148万担),桑园面积和蚕茧产量均比1999年翻了两番,步入了蚕茧生产主产区的行列。但我们还必须看到,目前我区蚕业还存在许多亟待解决的问题,这主要是:茧丝绸管理体制不顺,优质蚕茧的比重不高,生产集约化程度低,茧丝后加工能力低。跟江、浙一带比,还属于弱、小蚕区。如何把我区蚕业建设成大蚕区、强蚕区、优质茧丝生产基地,进一步提高我区… 相似文献
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射阳县是全省乃至全国的优质蚕茧生产基地,也是国家蚕桑产业技术体系建设基地县。目前在全国蚕桑生产普遍下行的情况下,我县蚕桑生产仍保持较好的发展势头,年增幅在5%左右,得到了国家、省、市行业主管部门的高度赞誉。1射阳县蚕桑业的现状全县现有桑园4000 hm2,2012年饲养蚕种16万张,产蚕茧6250 t,生产一代杂交种10万张,优质桑苗5000万株,蚕桑总产值2.6亿元,单位面积产值5000元/667 m2,蚕茧总量和蚕桑总产值双超历史,桑园面积和发种量均创17年来的新高。目前蚕业经济总量列全省第四、全市第二。全县蚕桑主要集中在特庸、盘湾、洋马3个镇,分别占全县的63．6％、28．6％、5．5％。 相似文献
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<正> 在世纪之交的1999年,全州蚕桑生产取得了较好的成绩,比上年净增蚕茧1.54万担,总产达到16.7万担,蚕农售茧收入近亿元,蚕桑生产再创历史最好水平,蚕茧产量已占全省第三位,蚕茧质量位居全省第一位,正积极向全省乃至全国新兴的优质茧丝基地建设目标挺进。但目前取得的成绩与我州蚕业资源优势相比潜力还十分巨大。为此,很有必要对我州蚕业发展的历程进行认真的回顾,对蚕业发展面临的机遇、前景有个清醒的 相似文献
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利用桑枝条蚕粪栽培黑木耳新技术 总被引：2，自引：0，他引：2
我国蚕桑生产历史悠久,蚕茧产量占世界总产量的80%,蚕业资源极其丰富.2005年全国共有桑园面积71.3万hm2,每年剪伐桑枝条干物约372.5万t,桑枝条是再生资源,如都能用于食用菌栽培,年可生产156亿袋菌菇. 相似文献
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宜州市小蚕共育成功普及的经验及现状与思考 总被引：3，自引：3，他引：0
2005年春我市桑园面积达到17．5万亩,桑园面积名列全区第一。桑园面积日益增多,不少蚕区户均桑园7亩以上,形成大量的桑蚕专业村。按当前的蚕茧行情预计,到今年年底,我市桑园面积将超过20万亩,因此,我市桑蚕生产已形成规模化发展的态势。 相似文献
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蚕桑是桐乡市农业的传统优势产业,全市目前有年报桑同面积1.07万hm2,从事蚕桑生产的蚕农有8万多户,全年饲养蚕种量稳定在40万张左右,年蚕茧生产量保持在1.5～1.8万t,蚕茧产量位居全省之首.但随着工业立市战略决策的实施,农村劳动力大量转移,从事蚕业生产的劳动者技术素质有待提高,安全生产意识有待增强,特别在春蚕生产过程中需要加温补湿的技术环节,由于加温设施、设备的原因,在近几十年的春蚕生产中,屡屡发生人、蚕伤亡事故. 相似文献
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魏静 《四川畜牧兽医学院学报》2009,(4):28-32
在现代法律秩序中,商会自治规范是制定法的基础和必要的补充,甚至在某些方面替代了制定法;商会自治规范主要包括商会组织规范、行为规范、惩罚规范以及争端解决规范等;其效力仅及于其内部成员;商会自治规范和制定法之间存在冲突,但也存在整合的基础。 相似文献
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本文概述了猪的毛色类型、猪的毛色遗传模式,着重综述了猪毛色基因分子基础的研究进展,指出存在问题并就未来发展方向做了思考。 相似文献
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以国际标准强毒Ｒ株人工感染非免疫产蛋鸡,定时扑杀,分别从鼻窦、眶下孔、气管、肺、气囊、卵巢和输卵管分离ＭＧ,并收集感染鸡所产蛋分离ＭＧ。结果表明,人工感染４８小时后上、下呼吸道及肺已被全面感染,９６小时气囊已被感染,１２０小时输卵管已能分离到ＭＧ,卵巢始终分离不到ＭＧ。人工感染鸡自１４４小时便能在其所产蛋中分离出ＭＧ。药物治疗能在７２小时内消除感染,油乳剂苗则需２４天后逐渐降低蛋内ＭＧ分离率,药物卵内注射、种蛋药浴、高温处理均能杀死卵内ＭＧ,但以研制的种蛋浸泡剂药浴效果为最好。 相似文献
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REASONS FOR PERFORMING STUDY: Centesis of the bicipital bursa using an 8.9 cm long spinal needle has been reported but the alternative of employing a 3.8 cm long hypodermic needle requires validation. OBJECTIVE: To compare the efficacy of 2 different methods of centesis of the bicipital bursa and to evaluate the usefulness of ultrasonographic imaging to determine the location of solution administered when centesis of the bursa is attempted. METHODS: For Trial 1, 6 clinicians, who had no previous experience of centesis of the bicipital bursa, attempted to inject a solution composed of an aqueous radiopaque contrast medium and physiological saline solution (PSS) into the bicipital bursae of 2/12 horses using the previously described distal approach to inject one bursa and a proximal approach to inject the contralateral bursa. The bicipital tendon and bursa were examined ultrasonographically before and after injection; and both shoulders were examined radiographically to identify the location of the medium. In Trial 2, another 6 clinicians, also with no previous experience of centesis, repeated Trial 1, using 6 horses, but the radiopaque contrast medium was mixed with air instead of PSS. RESULTS: Accuracy of centesis using the proximal approach was 39% and that of the distal approach 28%. Ultrasonographic examination of the shoulder allowed the location of solution and air to be accurately predicted in all 12 shoulders examined. CONCLUSIONS: Clinicians who have had no previous experience performing centesis of the bicipital bursa are unlikely to be successful in centesis using either approach. Radiographic examination after injecting a radiopaque contrast medium may be necessary to assess the success of centesis especially if bursal fluid is not obtained during centesis. Injecting air along with the radiopaque contrast medium provides more accurate ultrasonographic confirmation of centesis and better radiographic definition than does injection without air. 相似文献
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Effects of size of ingestively masticated fragments of plant tissues on kinetics of digestion of NDF
Ingestively masticated fragments were collected and sized via sieving. Different sizes of esophageal masticate and ruminal digesta fragments, and ground fragments of larger masticated pieces were incubated in vitro, and undigested NDF remaining at intervals of up to 168 h of incubation was determined. The ruminal age-dependent time delay (tau) for onset of digestion of NDF was positively correlated (P < 0.004) with the mean sieve aperture estimated to retain 50% of the fragments between successive sieve apertures (MRA). Degradation rate of potentially degradable NDF (PDF) and level of indigestible NDF were not related (P > 0.10) to MRA of masticated and ground fragments. Estimates of tau were positively related to MRA, with slopes of bermudagrass < corn silage < ruminal fragments of corn silage. It was concluded that fragment size-, and consequently, ruminal age-dependent onset of PDF degradation of a mixture of different fragment sizes results in an age-dependent rate of degradation of the more rapidly degrading of two subentities of PDF. Models are proposed that assume a tau before onset of simultaneous degradation of PDF from two pools characterized as having gamma-modeled age-dependency and age-constant rates. The ruminal age-dependent pool seems to be associated with the faster-degrading pool, and its rate parameter increases with range in MRA in the population of fragments. Conceptually, the ruminal age-dependent rate parameter for PDF degradation seems to represent a composite of several effects: 1) effects of the size-dependent tau; 2) range in MRA of the population of ingestively masticated fragments; and 3) subentities of PDF that degrade via more rapid age-dependent rates compared with subentities of PDF that degrade via age-constant rates. The estimated fractional rates of ruminative comminution of ingestively masticated fragments (0.060 to 0.075/h) were of a magnitude similar to the mean fractional rates of PDF digestion (0.030 to 0.085/h), which implies that ruminative comminution may be first-limiting to fractional rate of PDF digestion. The in vivo roles of ingestive and ruminative mastication of fragments on PDF degradation must be considered in any kinetic system for estimating PDF digestion in the rumen. These results and others in the literature suggest that the rate of surface area exposure rather than intrinsic chemical attributes of PDF may be first-limiting to degradation rate of PDF in vivo. 相似文献