期刊论文

Tang, Chuzhou(chzhtang2002@sina.com)

中文

农业工程学报

1002-6819

2015

31

21

68-75

10.11975/j.issn.1002-6819.2015.21.009

湖南省教育厅科学研究项目（15C0663） 湖南省科技厅产业联盟项目（2010xk6001） 湖南省农业工程重点学科项目（湘教发[2011]76号）

本校为第一且通讯机构

杂交水稻制种气力式辅助授粉时,花粉随气流场运动,喷气管道多个喷孔的气流场叠加,表征气流场特性的射流极角、出孔动压对花粉分布均匀性、传播距离起决定性作用,为探索射流极角、出孔动压与管道参数之间的影响关系,获得较理想的气力授粉管道参数组合。该研究首先分析喷气管道气流场的叠加原理,采用消防烟雾弹发出有色气体经喷气管道的喷孔喷射并拍摄气流场图片,选取喷管直径、喷管壁厚、喷孔直径三因素为影响因子,以射流极角、出孔动压为评价指标,进行三因素五水平的单因素和多因素正交试验,通过对试验结果进行极差分析、矩阵分析,获得各因素对气流场特性的影响规律,找出较理想的因素组合并进行...

Auxiliary pollination is the most critical process during hybrid rice seed production. The uniform and sufficient pollination has significant meaning for improving seed setting rate and operating efficiency. In the process of pneumatic auxiliary pollination for hybrid rice seed production, the pollens move with airflow, the airflow fields of multiple parallel nozzles of jet pipe overlay, and the jet cone angle and nozzle air pressure are the most important characters in airflow field. Increasing jet cone angle can expand the coverage of airflow field and reduce blind area of pollination effect...