黄芪多糖在家禽养殖业中的应用

黄芪多糖是中药黄芪的有效成分之一,具有促生长、促免疫、抗病毒、抗肿瘤、抗应激等广泛的生物学作用,在家禽养殖业中具有良好的应用趋势。该文综述了黄芪多糖作为免疫增强剂、抗病毒药物和增强细菌类疫苗保护力的作用在家禽养殖中的应用。     

我国上市公司资本结构相关问题探析

资本结构是现代企业财务管理的核心，既影响企业的融资成本和市场价值，又影响企业的治理结构。本文分析了我国上市公司资本结构的现状及成因，并提出了优化建议。     

小麦苗期抗纹枯病鉴定方法的改良及抗病品种筛选

Wheat sharp eyespot, caused by Rhizoctonia cerealis and R. solani, is a soil-borne fungal disease, which poses a great threat to wheat yield. In order to increase the identification efficiency of wheat sharp eyespot resistance, an improved method of rapidly identifying wheat sharp eyespot resistance was established by inoculating wheat seedlings with diseased wheat grains in greenhouse. To verify its reliability, four standard materials and 96 wheat varieties from Huanghuai wheat region were used for resistance assessment to sharp eyespot. Meanwhile, the resistance to Rhizoctonia solani of aforementioned materials in the field was identified by traditional methods. The results showed that the correlation coefficient between the four repetitions of the improved method ranged from 0.735 to 0.825, and the correlation coefficient between the average number of repetitions and the traditional method was 0.630. The results of wheat sharp eyespot resistance identification in Huanghuai wheat area showed that 66 wheat varieties were susceptible, accounting for 68.8% of tested materials. This indicated that the resistance of wheat varieties in Huanghuai wheat area to sharp eyespot was poor on the whole and needed to be improved urgently. At the same time, eleven wheat varieties which showed resistance to sharp eyespot at seedling and adult stages were screened, which include Zhengzhou 8998, Beijing 841, Handan 94-5316, Jimai 32, Jinmai 50, Jinmai 54, Longmai 157, Lumai 23, Shanhe 6, Shi 02-1 and Xinmai 18. Therefore, this study provides a method for identification of wheat sharp eyespot resistance at seedling stage, by which the resistance of wheat varieties to sharp eyespot can be quickly and efficiently identified. Furthermore, selected resistant materials provide important material resources for wheat sharp eyespot resistance breeding in Huanghuai wheat region and even in China.     

我能拉他家的猪羊抵债吗

问：两年前．市场上柴油十分紧张，邻村农民张某说他能买到．于是我就将3000元现金交给了张某让他代买．可是张某不但没有买到柴油．至今连钱都赖着不还，我先后多次去他家里催要，他都不予理睬。有人对我说，不还钱就上门去拉他家的猪羊．卖他家的粮食来抵债。请问，我这样做行吗？[第一段]     

固相微萃取结合GC-MS法分析龙蒿油中的致香成分

龙蒿油中的致香成分的构成研究较少,本文采用固相微萃取结合气相色谱质谱联用技术对龙蒿油中的化学成分进行分析,确定了龙蒿油中70种香气特征的化学物质。分析了主要致香成分对整体风味影响及主要作用。     

吉林省玉米良种综合评价专家系统的研究

专家系统是人工智能最活跃的一个分支，它在作物育种综合评价中的应用越来越受到人们的重视。本文应用专家系统的理论方法，进行“玉米良种综合评价专家系统的研制”，以增强玉米育种工作的预见性，提高玉米育种工作效率，为智能技术在吉林省农业上的应用开创新局面。     

草菇栽培研究进展

本文分析了我国草菇栽培的起源、发展、栽培的生物学特性、栽培草菇的意义及栽培存在的难点等,并对草菇产业的发展进行了展望.     

新洋“四度发力”蝉联省市文明单位荣誉称号

2021年是新洋"江苏省文明单位"和"盐城市文明单位"的双创之年。随着"盐城市文明单位"落户新洋,"江苏省文明单位"荣誉称号也接踵而至,两项荣誉的取得是农场创建文明单位工作的生动阐释。文明创建工作是全场域、全体职工群众的大事,新洋以职工群众为中心,实行全场联动,全民参与,将各有所长的职工群众吸引到文艺队伍、志愿者队伍、文体协会中来。     

蔬菜积累的硝酸盐及其对人体健康的影响

 本文针对有关硝酸盐对人体健康影响的两种完全不同的观点，从硝酸盐在蔬菜中的积累、人体摄入硝酸盐的来源、硝酸盐在人体中的转化、代谢产物的致病和生理作用等方面讨论了硝酸盐对人体健康的危害和可能存在的有益作用，以期对硝酸盐对人体健康的影响有进一步的客观认识。