Effects of Broadcasting Time and Film Mulching on Yield and Resistance of Winter Rapeseed Qinyou 10
Using the rapeseed variety Qinyou 10 as the experimental material,two factors randomized block design as test method,this paper studied effects of broadcasting time(October 20,October 27,November 4,November 11)and film mulching(film mulching hole sowing and outdoor hole sowing)on yield,main economic traits,and resistance of winter rapeseed.The results showed that film mulching hole sowing planting could improve plant height,branch location,effective branches per plant,effective number of pods per plant,enhance resistance,advance growth period by 3-6 days,and increase rapeseed yield by 4.03%-15.77%.However,the yield increasing effect of film mulching showed a significant downward trend with the delay of broadcasting time.Overall,in the Chuzhou area,the minimum threshold for outdoor hole sowing of rapeseed is October 27.Combining with the plastic film mulching technology before this broadcasting time is more conducive to achieving the goal of high yield of rapeseed.