In 2022,the research and application of the techniques for mechanized seed production of hybrid rice,including female parent machine transplanting,plant protection pesticide application by unmanned aerial vehicle(UAV),UAV GA3 spraying,UAV-assisted pollination,mechanical harvesting of hybrid seed and mechanical seed drying,ect.,was carried out in Zhongshan County and Gongcheng County of Guangxi.The results showed that when hybrid rice seed production adopted machine transplanting of female parent and manual transplanting of male parent,the sowing difference period of male and female parents needed to be shortened by about four days so that the flowering period met well between the parents.Compared with the traditional artificial seed production,the mechanized seed production by UAV GA3 spraying and UAV-assisted pollination had a little lower seed setting rate but a higher seed yield of the female parent,the total production cost of mechanized seed production was reduced by 1 665 yuan/hm2,the seed yield was increased by 580 kg/hm2,and the income was increased by 11 600 yuan/hm2,indicating that the effect of cost saving and income increasing of the mechanized seed production is significant.The key techniques and effects of mechanized seed production of hybrid rice in northern Guangxi were summarized,which provides support for the application of mechanized hybrid rice seed production technology in Guangxi.
关键词
广西/杂交水稻/机械化/制种技术
Key words
Guangxi/hybrid rice/mechanization/seed production technology
维普
万方数据