杂交水稻新混优6号机械化混播制种技术

摘要

Hybrid rice Xinhunyou No. 6 could be cultivated by mixing male and fe-male parents and performing seedling raising fol owed by transplanting, mechanical planting or mechanical direct seeding according to the production methods of com-mercial rice. During flowering stage, leaf cutting, application of "920" and pol ination were conducted; after pol ination, bentazon with a certain concentration was sprayed to kil the male parent; and the hybrid rice was harvested mechanical y. Before storage, color separation was performed to remove little remaining male parent, thereby achieving whole-process mechanization of hybrid rice seed production. This study introduced mechanized seed production of Xinhunyou No. 6 through mixed-seeding from the aspects including mechanical direct seeding, seeding raising fol-lowed by transplanting and mechanical planting.%杂交水稻“新混优6号”可以将父母本种子按照一定的比例混合，按照商品水稻生产的方法，育秧移栽、机械插秧或机械直播等方法进行种植。开花时，割叶、喷施“920”，并赶粉，在母本授粉后，通过喷施一定浓度的苯达松杀死父本，并机械化收割。入库前通过色选技术去除少量残留的父本，从而达到杂交水稻制种的全程机械化。该文从机械直播、育秧移栽、机械插秧等几个方面分别介绍"新混优6号"机械化混播制种技术。