叶面喷施丰产素在黄瓜上的应用效果

本试验在黄瓜上叶面喷施丰州牌丰产素，其浓度分别为２０００倍、４０００倍和６０００倍。试验结果表明，３种浓度对黄瓜的生长势都有增强的作用，并对早期产量有较大的提高。其中２０００倍液对早期产量的增产幅度最大，比对照提高４２．８１％。并且对黄瓜的营养成份有不同程度的影响，其中６０００倍液对维生素ｃ和含糖量都有较大的提高，因此，对黄瓜品质的改进有较好的效果。     

牵引犁受力分析的解析方法

分析了牵引犁受力图解法求解所存在的问题，用解析方法建立了牵引犁受力的矩阵方程组并利用计算机进行了求解，预测了各结构参数变化对机组受力工况的影响，从而为牵引犁机组的合理配置和各部件结构的强度计算和优化设计提供了理论依据。     

Seroepidemiological survey of Corynebacterium pseudotuberculosis infection in sheep in Japan using enzyme-linked immunosorbent assay and immunodiffusion

Sera from 1186 apparently healthy sheep in Hokkaido were examined by enzyme-linked immunosorbent assay (ELISA) and immunodiffusion (ID) for the presence of antibodies against Corynebacterium pseudotuberculosis. ELISA-positives were 466 (39.3%) while ID-positives were 330 (27.8%). Spread of caseous lymphadenitis in sheep in Hokkaido was thus clarified. Although ID was less sensitive than ELISA in detecting the antibodies against C. pseudotuberculosis it did not give any non-specific reaction. From the results and in view of the simplicity of the test procedure, ID was found to be of practical diagnostic value. Distribution by age group of anti-C. pseudotuberculosis antibodies in 758 sheep in a herd detected by both tests showed that the ratio of positives was low in sheep aged less than 1 year, and the ratio increased significantly in those aged 1 year and continued to increase with age until it reached a plateau at the age of 4-5 years.     

猪肉毒梭菌毒素中毒的诊断报告

１９９９年７月１５日，遵化市某养猪场的６０ｋｇ左右的育肥猪，因饲喂霉变的小干鱼，引起猪只急性发病和死亡。发病猪只７５头，死亡２１头，治愈５４头，治愈率７２％，现将情况报告如下。１ 临床症状 病猪呆立，食欲废绝，精神沉郁，鼻端、眼结膜发绀，口角流涎并有泡沫，呼吸困难，腹壁松驰，有的腹泻，粪便呈黄绿色或灰绿色水样物，站立不稳或颤抖，尾下垂，不走动，叫声嘶哑，反应迟钝。后肢多呈瘫痪状，卧地不起，最后瞳孔散大，窒息死亡。病猪大多体温正常，个别达４０～４１℃。病程一般在１～３ｄ，个别猪发病到死亡仅 ５～６ ｈ…     

我国价格体系改革趋势初探

本文以我国国民经济系统与河南省经济子系统的同构性为基础,利用河南省1987年投入产出表,计算出诺依曼最优生产强度和与之相应的最优价格,进而对照现行价格,提出了我国价格体系改革走向的基本构想,并对其合理性、可行性进行了初步研究。     

金乡地膜大蒜种植技术

金乡县是中国著名的大蒜之乡,所产大蒜个大皮白,具有较高的食用价值和药用价值.现将金乡地膜大蒜种植技术介绍如下:     

Sequence of the canine c-yes proto-oncogene

Cloning of the canine yes oncogene was attempted from a c library derived from a healthy canine spleen using a human c-yes-1 probe. The nucleotide and amino acid sequences revealed that the canine yes gene contained an open reading frame consisting of 539 amino acids. Its product had a molecular mass of 60,368 Daltons and showed 95·9 per cent and 90·4 per cent homology with human and chick p61^c-yes, respectively. Moreover, the product had a myristylation signal, src homology region (SH) 3, SH2, and tyrosine kinase domains showing 98·8 per cent and 96·0 per cent homology with those of human beings and chickens, respectively. These findings indicate that the products of the canine yes gene may have non-receptor-type tyrosine kinase activity on the cell membrane, as is the case in human and chick p61^c-yes     

保护地番茄新品种苏粉8号的选育

苏粉8号系以GB9736为母本,TM9761为父本配制而成的适合保护地栽培的中熟番茄一代杂种.属无限生长型.果实高圆形,粉红色,果面光滑,果皮厚,耐贮运,品质佳,可溶性固形物含量5.0%,酸甜适中,单果质量200～250 g,产量6 000kg·(667 m2)-1以上.高抗ToMV-0,1株系、叶霉病,抗枯萎病,中抗CMV.已在江苏、山东、四川、浙江等地示范推广逾266.7 hm2.     

椰糠对黄瓜穴盘苗生长发育的影响

将草炭、椰糠、蛭石按不同比例配制育苗基质,探讨椰糠对黄瓜秧苗生长发育的影响。结果表明,椰糠具有较好的保水性,酸碱度适合于作为穴盘育苗基质,出苗情况较好,秧苗质量高,证明椰糠是一种良好的园艺栽培基质。     

苹果早期落叶病的综合防治

苹果早期落叶病主要包括苹果褐斑病、灰斑病、圆斑病、轮纹斑病等多种病害。是我国各苹果产区主要发生的病害,为害严重年份,造成苹果树早期落叶,削弱树势,果实不能正常成熟,对花芽形成和果品产量、质量都有明显影响。该病为害苹果外,还可为害沙果、海棠、山定子等。1、症状1.1褐斑病:主要为害叶片,叶上病斑初为褐色小点,后可发展为以下三种类型。轮纹型: