非洲猪瘟形势下猪流行性腹泻的防控措施

自2018年第一例非洲猪瘟疫情报道至今已经两年多了。为了快速扩繁猪群,许多清空场及新建场不得不大量外购来源复杂后备猪进群。因此,猪场在对猪流行性腹泻的防控上面临着更大的挑战。文章介绍了病毒性腹泻暴发的原因、防控难点和综合防控措施,期望为养殖业同人在实际生产中,科学防控猪流行性腹泻提供一定的参考借鉴。     

家庭猪场防控非洲猪瘟的关键点分析

非洲猪瘟对家庭猪场的生产稳定性带来极大的挑战。文章分析了家庭猪场防控非洲猪瘟存在的问题及对关键点针对性的防控措施。     

社会主义新农村建设目标及实现

“生产发展、生活宽裕、乡风文明、村容整洁、管理民主”是社会主义新农村建设的主要目标,它是物质文明、精神文明和政治文明的具体体现。这些目标的实现,有赖于党的坚强领导,农民生活条件的改善和自身素质的提高。     

种衣剂在小麦上的应用效果初报

就17%多·克·酮小麦种衣剂对幼苗生长的调控作用以及田间防治甘肃省小麦主要病害的实际应用效果进行了试验研究。盆栽试验结果表明，17%多·克·酮种衣剂安全的药种比为1:50，在此包衣比例下，不仅可提高出苗率，对植株生长无不良影响，而且能使植株根系活力显著增强，叶片叶绿素含量明显提高，生长后期抗倒伏能力增强；田间小区试验结果表明，对早期小麦条锈病的防效可达76.2%、小麦白粉病可达77.0%，对土传性小麦全蚀病的防效可达到82.1%，冬麦区小麦产量提高6.8%，春麦区小麦产量提高10.9%。     

Iron uptake in a bicarbonate-resistant cell line of tobacco

Abstract

In alkaline soils, plant growth is impaired mainly by high pH and high concentration of bicarbonates. The bicarbonate concentration increases the pH value, and causes deficiency of iron. A bicarbonate-resistant cell line (BR line) of tobacco (Nicotiana tabacum L. cv. Burley21) was selected by adding excess bicarbonate ions (20 mmol L^?1) to the culture medium. The pH of the medium was buffered 8.0 to 8.3. Under these conditions, about 80% of iron in the medium became insoluble. However, under such conditions, the BR line grew well. In this report, we examined some characteristics of the growth and iron uptake in the BR line under iron-deficient (i.e. high pH or no-iron) condition. At pH 5.8, the Fe³⁺ reduction activity was not significantly different between the non-selected line and the BR line. At pH 8.0, however, the Fe³⁺ reduction activity of the BR line was higher than that of the non-selected line. In no-iron condition, the growth of the non-selected line was markedly reduced after 2 weeks, while the BR line was not affected. The content of malic acid in both lines increased with the medium pH, and the content in the BR line was higher than that in the non-selected line. The BR line was able to adapt to the conditions, which restricted iron uptake, such as high bicarbonate concentration, high pH, and low iron conditions. The high ability of Fe³⁺ reduction was maintained at even high pH conditions. Further, the BR line may be able to improve the utilization of iron in the cells.     

驱蚊草驱除库蠓预防鸡白冠病的应用试验

本试验采用粘蚊帖收集库蠓的方法，了解在鸡舍内和鸡舍外使用驱蚊草对库蠓的驱除作用。试验结果证明：使用驱蚊草在鸡舍外能够在1．5m范围内有效地减少库蠓的数量（P〈0．05）：放置了驱蚊草的鸡舍相比未放置驱蚊草的鸡舍其库蠓数量明显减少（P〈0．05）；另外，驱蚊草对蛋鸡的产蛋率与死淘率无明显影响。由此可见，驱蚊草有明显的驱库蠓效果，能达到预防鸡白冠病的目的，     

Non-chemical agents provide tenable,eco-friendly alternatives for the management of the major diseases devastating Indian mustard (Brassica juncea) in India

India is a leading producer of oilseed Brassicas, contributing approximately 23 percent of the country's total oilseed production. In India, the Indian mustard [Brassica juncea (L.) Czern. & Coss.] crop is ravaged by various diseases, including Alternaria blight, white rust, downy mildew, Sclerotinia rot and powdery mildew, which can contribute to fluctuations in crop yields. A field experiment examining an integrated disease management system for Indian mustard (B. juncea) was conducted under the All India Coordinated Research Project on Rapeseed-Mustard (Indian Council of Agricultural Research or ICAR) during three crop seasons (2006–09) at 11 locations to assess treatments suitable for the management of crop disease. The data from the different locations and years regarding disease severity and incidence were pooled and analyzed. Seed treatments with freshly prepared Allium sativum bulb aqueous extract (1 percent w/v) resulted in significantly higher initial plant stands, across locations and years. Seed treatment with A. sativum bulb extract, followed by its use as a foliar spray, resulted in significantly reduced Alternaria leaf and pod blight severity, reduced white rust severity, fewer stag heads per plot, reduced downy mildew and Sclerotinia rot incidence, and reduced powdery mildew severity, across locations and years. The combination also provided significantly higher seed yields compared with the control across locations and years and was at par with treatment by chemical fungicides. The combination used in the present study was as effective as the combination of seed treatment with Trichoderma harzianum and foliar spraying with Pseudomonas fluorescens and T. harzianum. Economic returns were higher when using biorational treatments (A. sativum bulb extract, T. harzianum, P. fluorescens) compared with chemical fungicides. The combination of seed treatments with T. harzianum followed by its use as a foliar spray (17.22), and the similar combination of seed treatments and foliar spraying with the A. sativum bulb extract (17.18), resulted in a higher benefit to cost ratio. This eco-friendly technology can help oilseed Brassica growers in India safeguard the crops from major diseases and increase the stability and productivity of the Indian mustard crop.     

毛皮动物犬瘟热、细小病毒性肠炎和脑炎防治技术指南

为了预防、控制和消灭毛皮动物犬瘟热、细小病毒性肠炎和脑炎,依据《中华人民共和国动物防疫法》及有关法律法规,制定毛皮动物犬瘟热、细小病毒性肠炎和脑炎防治技术指南,指导毛皮动物犬瘟热、细小病毒性肠炎和脑炎防控。     

牛流行热病的诊疗

本文通过某公牛站4次流行热病的发病情况、临床症状、预防治疗及笔者的体会,对牛流行热病的预防和治疗提供参考。