一体化教学模式中四个一体化问题

要使一体化教学模式顺利实施和推广,在硬件和软件上必须满足很多条件,其中最主要的是四个一体化问题:教师一体化、教材一体化、教室一体化、评价和鉴定体系一体化。本文是从院校培养技师的角度出发,着重阐述了这四个方面的问题,并提出了相应的解决办法。

The Study of Using Near-infrared Diffuse Reflectance Spectroscopy Rapid Identify Wheat Drought Resistance-Ⅱ

[Objective] The aim was to build an evaluation method rapidly identifying wheat drought tolerance with near infrared diffuse reflectance spectroscopy. [Method] In the research, 36 wheat varieties in 2007-2009 were chosen and drought-tolerance degrees of wheat were graded and identified according to Winter-wheat Drought Tol- erance Evaluation Technical Standards （GB/T 21127-2007）, and harvest wheat grains underwent spectrum collection, with a full-spectrum analyzer, to establish a database. [Result] Based on qualitative analysis and full-spectrum correlation research, the coef- ficient of determination （RSQ） and cross-validation coefficient of determination （1-VR） were concluded at 0.697 5 and 0.600 2, showing near-infrared diffuse reflectance spectroscopy is of significant differences among wheat varieties and of significant or extremely significant correlation with drought-tolerance indices. [Conclusion] The re- search indicates that to evaluate drought-tolerance of wheat with near-infrared diffuse reflectance spectroscopy is a rapid and feasible way, which is simple, convenient without damages on grains, and of practical values for construction wheat drought-tol- erance evaluation index system and identification of breeding materials.

优异农作物种质资源田间展示宣传工作实践

在第三次全国农作物种质资源普查中,陕西各地征集了大量优异农作物种质资源,部分市县在缺人、缺钱、缺技术指导的情况下,自行开展了优异农作物种质资源田间展示工作,积累了不少工作经验,“精选资源、细化管理、准确鉴定、活化宣传”为技术要点,领导重视、保障充分是关键因素。全国范围内的优异农作物种质资源田间展示宣传工作即将开展,针对陕西在展示宣传中遇到的主要问题,提供陕西应对方案,以期为其他省份开展此项工作减轻阻力、提高效率,也可为今后各类种质资源鉴定工作的开展提供参考。但长远来看,必须建立农作物种质资源田间鉴定评价体系,将农作物种质资源基本农艺性状多年多点鉴定、初步筛选、推广列为行政部门一项长期工作任务,促使农作物种质资源丰富但育种亲本缺乏的问题和矛盾得以解决。