关键词: 籼粳杂交稻, 无人机, 辅助授粉

Abstract: Rice is the most important grain crop in Zhejiang province, and Indicajaponica hybrid rice has become the main rice variety type in Zhejiang Province. However, seed production of Indicajaponica hybrid rice is a laborintensive technology, in which the pollination stage of rice mainly relies on the artificial use of rope, bamboo or wooden poles to vibrate the male parent and natural wind assisted pollination. With the development and research of agricultural UAV in China in recent years, it is possible for the mechanization of auxiliary pollination for hybrid rice seed production. Taking the quadrotor UAV as an example, this paper investigated the pollination effect of the agricultural UAV and the artificial rope through the field pollination experiment, the observation of pollen density and the calculation of seed setting rate. The results showed that the effect of drone assisted pollination was comparable to that of artificial pull rope, i.e., the pollen count was about 95 IOD and the average seed setting rate was about 27%. However, the efficiency of UAV assisted pollination is more than 10 times that of manual pollination, saving 50% of labor cost, and overcoming difficulties such as planting terrain and environment, which contributes to the improvement of mechanization level.

Key words: Indicajaponica hybrid rice, unmanned aerial vehicle, auxiliary pollination