Breeding Methodology and Practice of Super Rice in China

To meet the growing demand for rice production,the Ministry of Agriculture,P.R.China initiated a nationwide project on the development of super rice in 1996.Through efforts in research,super rice breeding in China has gained significant advances in the aspects of breeding theories,creation of breeding materials and selection and promotion of elite rice varieties.A creative super rice breeding path of the construction of harmonious plant type combined with the utilization of heterosis was proposed.Super rice...     

揉捻工艺对夏茶品质影响之研究

本文以鸠坑种鲜叶为原料,研究不同嫩度和揉捻程度对夏茶品质的影响,设计三因素三水平实验,感官评定不同茶叶的品质,并测定冲泡茶汤的水浸出物含量。结果表明：采用一芽二叶的鲜叶原料,轻揉5min,重揉25min,所得成茶品质最优。     

Quality aspect of fish sauce prepared from underutilized fatty Japanese anchovy and rabbit fish

ABSTRACT:   To explore the potential utility of underutilized fish in the fish sauce industry, fish sauces were prepared from both raw and heat-induced meat of Japanese anchovy Engraulis japonica and rabbit fish Siganus fuscescens using wheat malt, and their quality aspects and sensory properties were assessed. Proximate composition of the fish meat represents protein as the major component (16.0–17.8%), other than moisture. Analyses of free amino acids, peptides including oligopeptides, and organic acids contents in fish sauces revealed suitability of both raw and heat-induced meat of the selected species in commercial fish sauce production. The variations in taste of raw meat fish sauces were species-specific, but the taste of fish sauces from heat-induced meat were similar.     

鳙在不同保藏温度下的鲜度变化

为了阐明不同保藏温度对淡水鱼类鲜度变化的影响,采用K值、TVB-N、细菌总数和感官检定等 4种鲜度指标,对鳙在 20℃～-3℃范围的 5种不同温度贮藏中的鲜度变化进行比较系统的测定和考察。结果表明:(1)鳙的鲜度变化。在20℃和10℃常温下速度很快,保鲜期从数小时到4天;在 0℃前后的3种低温下速度变慢,保鲜期最长的可达 11天。(2)4种鲜度指标中,以感官的一、二、三级为基准,K 值的一、二级鲜度大体高于或等于感官的一、二级;而 TVB-N 一、二级鲜度(也包括细菌总数)则大体相当于或低于感官二、三级,显示了K值作为代表鱼体死后早期高鲜度等级的特征。(3)计算K 值变化速度常数 k_f 值表明 20℃的 K值变化速度较 10℃高6.3倍,而10℃较0℃仅高3.9倍,显示保持接近 0℃的低温,能明显抑制K值的变化,保持较好的鲜度。文中并指出了在5℃以下的低温范围,由于TVB-N 的数量水平偏低,似不适于作为鳙一类淡水鱼鳞度指标,认为在我国采用 K 值鲜度指标更适合淡水鱼高鲜度质量标准的要求。     

青海省林木种苗生产现状、技术措施对策

阐述目前林木种苗生产、经营监督力度不够,种苗市场混乱,生产管理粗放,科技含量不高等主要问题。     

建国后浙江乡村科技事业发展历程与启示

新中国成立后,浙江乡村科技事业发展经历了建国初期的恢复、人民公社时期的"大跃进"以及改革开放后的跨越式发展期。梳理浙江乡村科技事业发展历程,从中概括其先进经验和启示,为中西部欠发达地区乡村科技事业建设提供借鉴,具有重要的实践意义。     

Auscultation in mild mitral regurgitation in dogs: observer variation, effects of physical maneuvers, and agreement with color Doppler echocardiography and phonocardiography

Observer variation in diagnosing mild mitral regurgitation in dogs by cardiac auscultation was assessed by having 6 veterinarians with different levels of experience examine 57 Cavalier King Charles Spaniels. Comparisons with color Doppler echocardiography and phonocardiography were made, and the effects of 2 physical maneuvers on the auscultatory findings were evaluated. Using mildly diseased dogs, interobserver agreement in diagnosing the presence or absence of left-sided murmurs ranged from 63% to 88%. The agreement with phonocardiography (range, 53-91%) increased with the amount of observer experience. The 2 most experienced observers could discern soft ejection murmurs from regurgitant murmurs and were able to diagnose 89% of the dogs with regurgitant jets larger than 30% of the left atrial area. In general, less experienced observers diagnosed most jets larger than 50%. In many dogs with small jets, no murmur was found by auscultation and phonocardiography. The audibility of mild regurgitation was significantly reduced in dogs that were difficult to auscultate. Early systolic murmurs were typical of mild regurgitation, whereas holosystolic murmurs typified severe regurgitation. In a few dogs, late systolic murmurs alternated with holosystolic murmurs. Systolic clicks were found phonocardiographically in 18 dogs with mild to moderate regurgitation, but the audibility apparently was low. In many mildly affected dogs, physical maneuvers increased murmur intensity. Thus, some form of dynamic auscultation might facilitate the diagnosis of mild regurgitation. Auscultatory findings in mild regurgitation appear to depend on observer experience, circulatory status, and how difficult the dog is to auscultate.     

数控加工实训教学经验交流

数控技术是用数字信息对机械运动和工作过程进行控制的技术,数控装备是以数控技术为代表的新技术对传统制造产业和新兴制造业的渗透形成的机电一体化产品,数控技术的广泛应用不但给传统制造业带来了革命性的变化,也给中国的高的教育发展起到了促进作用。文章结合我院数控实训教学的现状及笔者多年从事数控实训教学工作经验,总结了数控实训教学过程中的几点心得,旨在促进教学效果的提高,推进技能型人才培养的速度和质量。     

实施农业综合开发，促进旅游农业发展

农业综合开发是国家支持和保护农业的重要举措，是发展农村生产力的有效途径．是提高农业综合生产能力、保证粮食安全和促进农民增收的关键措施。山东省海阳市立足资源和区域优势．将农业综合开发土地治理项目与旅游农业的规划、建设密切结合。强化措施，整合资金，加强管护，确保了农业综合开发土地治理项目和旅游农业高标准建设．发挥了农业综合效益。走出了一条以农业综合开发促进旅游农业发展的新路子。     

病死猪肉的感观检验和处理

从猪肉的放血程度、切杀口状况、血液沉积情况、淋巴结的变化等方面，介绍了健康猪肉、急宰猪肉、病死猪肉的感观检验方法，并提出了病死猪肉、急宰猪肉的无害化处理方法。