Study On Pollination Effect By Using Different Pollination Mechanics To Product The Seed Of Hybrid Rice

Three kinds of mechanical pollination machinery which the JiFei P20 fully autonomous flight of UAV,high gap self-propelled pollinator(type I and type II)developed by Yuan Longping Agricultural High-tech Co.,Ltd.and Southern China Agricultural University,artificial backpack pollinator are used in this experiment.The test at Research and Demonstration Base of Mechanized Seed Production Technology in Wugang,Hunan is studying that the optimum flight speed for pollination of agricultural plant protection UAV,and the pollination effects of high gap self-propelled pollinator and artificial pollination bear type pollinator contrast with agricultural plant protection UAV.The test results show that:1.The optimum speed of assisted seed production and pollination by fully autonomous flight Four-rotor plant protection UAV is 4-4.5m/s;2.The pollination effect of high gap self-propelled pollinator can reach the pollination level of plant protection UAV,it can be used to pollinate Hybrid Rice under large ratio of parents to parents(the male parent planted 8 rows,the width of the male parent was 2.4m,and the width of the female parent was 8-9m).,the speed is 1.5m/s;3.The pollination effect of artificial backpack pollinator can reach or exceed the pollination level of plant protection UAV.It can be used to pollinate Hybrid Rice under large ratio of parents to parents,the male parent planted 6 rows with a width of 1.8m and the female parent planted with a width of 7-9m,.4.The pollination efficiency of agricultural plant protection UAV and high gap self-propelled pollinator is higher,which are about 8-11 hm~2/h and 12-13 hm~2/h,respectively,the pollination efficiency of artificial backpack pollinator is lower,which is about 2.1 hm~2;5.The field paternal pollen density in hybrid rice seed production is at least 3.5 per field vision,which satisfies maternal cross-fertilization.When the pollen density was 3.5-6.0 per field of vision,the outcrossing seed setting rate of female parent increased with the increase of pollen density.When the pollen density was higher than 6.0 per field of vision,the outcrossing seed setting rate of female parent was stable at a high level.