A community-based telephone survey of work and injuries in teenage agricultural workers

In order to estimate the one-year cumulative incidence of work-related injuries in teenage agricultural workers and to characterize the patterns and types of agricultural work performed by teenagers, we performed a community-based random-digit dialing telephone survey. We used a sampling frame of farm and non-farm households to access information on teenage agricultural workers. An agricultural community in eastern Washington State was selected due to the high number of teenage youth and its agricultural economy. Teenage agricultural workers who worked for an agricultural business owned by one of their family members were more likely to work a greater number of seasons, work fewer hours per week, perform tasks involving driving, animal care, and mechanic work, and were less likely to be seasonal workers or work in the harvest than teenagers who did not work for a family member. A similar pattern of work differences was seen when comparing non-Hispanic to Hispanic agricultural workers. Teenagers working for a family member in agriculture had a higher injury rate than teenagers working for an agricultural business not owned by a family member. The injury rate among Hispanic teenage agricultural workers was also higher than that of non-Hispanics.     

果实比重大小对番石榴采后贮藏的影响

两个番石榴品种(“Allahabad Safeda”和“Sardar”)果实按比重大小分成三组:Ⅰ组、Ⅱ组和Ⅲ组(比重分别为<1.00、1.00—1.02>1.02).两品种的Ⅰ组果最大、维生素C含量最高,合格率也较高,果实箱装贮藏寿命为6天.Ⅱ组果箱装贮藏寿命为8天.Ⅲ组果最小,成熟度也比Ⅰ、Ⅱ组果相对差,果色欠佳,营养质量低劣,特别是维生素C含量不高.“Sardar”品种的三组果无论大小、合格程度或维生素C含量均优于“Allahabad Safeda”品种.     

玉米F0代子粒品质性状杂种优势的研究

用4个不同来源的自交系花粉分别与4个母本自交系杂交,分析杂交当代子粒中蛋白质、淀粉、赖氨酸含量和百粒重的当代杂种优势。试验结果表明:当代子粒的蛋白质含量、淀粉含量、赖氨酸含量和百粒重均存在当代杂种优势。其中F0子粒中蛋白质当代杂种优势最高达54.1%。     

汾西县淤地坝建设、管护的一些做法

汾西县淤地坝建设有着悠久的历史,特别是新中国成立以后,该县的淤地坝建设取得了长足的发展。仅2000年以来,共计新建骨干坝9座、中小型淤地坝97座、生产坝361座。在淤地坝建设和管护中该县走出了一条坚实而富有成效的路子:一是整合资金,大大推动了全县淤地坝建设进程;二是大力推行“护坝田”制度,充分保证了淤地坝滞洪减灾、淤地造田、控制水土流失、提高粮食产量等效益的正常发挥。     

山杏的丰产栽培技求

一、山杏的育苗技术 （一）种子处理 山杏种子休眠期很长。秋播种子不需处理．脱肉后即可播种。春播要在播种前进行种子催芽处理．即冬季屡积贮藏催芽法。11月中司在地势高燥、排水良好、背风向阳的地方挖坑。种子入坑时先在坑底铺10—20cm厚的河卵石和沙子，坑内每隔1—2m插通气管，然后把混拌好的比例为1：3的种子和湿沙（含水量为60％，以握紧不滴水，伸展手不散开为宜）混合物放入坑内，种沙厚度以50-70cm为宜。     

广东高校园林专业教育发展浅论

本文通过文献资料研究和社会实际调查，认真分析了广东高校园林专业教育的现状及存在问题，提出了在21世纪广东园林高等教育应采取的若干发展对策建议。     

茶叶妙用六法

茶叶作为饮品被越来越多的人喜爱，而在其他方面却很少有人知其用途，不管是泡水后的残茶，还是上好名茶，下面的方法均可供读朋友参考：     

再生稻田病虫害的发生及防治

再生稻是利用一些品种再生能力强的特点,一次播种,二次收获.由于再生稻本身的生长发育进程与早、中、晚稻均有所不同,因而决定着其病虫害发生情况也有其特殊性.近年来,我们对再生稻田病虫害发生特点进行了观察与调查.