制种玉米机械化收获影响因子研究OA

To find out how agronomic practices,seed varieties,and machine operations affect the mechanical harvesting quality of seed maize,trials were conducted at seed maize bases from 2021 to 2023.Different agronomic treatments and harvesters with various settings and speeds were tested.Harvest quality was also measured in fields with many double ears and barren ears.Results show that combining machinery with agronomic practices is key to improving harvest quality,and proper machine adjustment is critical.Graded seed planting reduced grain breakage and total loss by over 0.03%compared to mixed seed planting.Using a power harrow before harvesting lowered breakage by 0.01%compared to using a rotary tiller.A precision seeder gave a breakage rate of 0.45%.During harvest,setting the stalk roller gap to half the average stalk diameter and the snapping plate gap to two-thirds of the average ear diameter gave the highest breakage rates of 0.58%and 0.526%,respectively.At a harvest speed of 4 km/h,the highest breakage rate was 0.5%.For fields with high rates of double and barren ears,a segmented harvesting method is recommended.The research results provide a basis for the mechanized and standardized production of seed maize.