Agronomic factors affecting the mechanized emasculation of maize seed production
The effects of different agronomic factors on mechanized emasculation were studied to provide technical basis for standardization of maize seed production and promotion of mechanized emasculation technology in maize seed production.Four representative original varieties were selected,and according to the agronomic requirements and planting patterns,a planting area was set up for each variety,and each planting area was divided into different seed grading treatments,different sowing time,different sowing methods,different planting patterns,different emasculation machinery and different emasculation patterns to determine the uniformity of growth and the effect of mechanized emasculation of seed production maize.The effect of mechanized emasculation of maize seed production was related to seed grading,sowing time,sowing mode,planting mode,emasculation machinery and emasculation mode,after seed grading treatment,the mechanized net-taking rate(over 85%)was significantly higher than the mechanized net-taking rate of hybrid seeds(48%),and the mechanized net-taking rate of mid-late sowing was 5%higher than the mechanized net-taking rate of early sowing.The net yield of combined precision seeder was 10%higher than that of mechanized seeding,4%higher than that of wide and narrow row.The satellite navigation intelligent driving system is used to control the agricultural machinery operation,which has high precision and good linearity,and is beneficial to the follow-up agricultural mechanization operation.Therefore,in actual production,it is necessary to select suitable tillage and soil preparation methods and machines according to soil conditions,select seeds and carry out grading treatment and grading planting,appropriately delay sowing time,improve sowing quality,adopt equal row spacing planting,and choose suitable equipment and mode of emasculation according to crop growth and planting scale,which can effectively improve the net access rate of mechanized emasculation.
NETL
NSTL
万方数据
