Effects of UAV Aerial Seeding Period and Seeding Methods on Yield,Quality and Economic Benefits of Winter Oilseed Rape
Explore the effects of different UAV aerial seeding periods and seeding methods on the growth,yield,quality,nutrient uptake and economic benefits of winter oilseed rape,so as to provide a reference basis for the simplified production of winter oilseed rape in the Yangtze River Basin.A field demonstration trial was conducted in Jingzhou City,Jianghan Plain,with six treatments,i.e.,aerial seeding without fertiliser(CK),manual spreading(T1),aerial seeding in cereal forest sets(T2)and aerial seeding after paddy 1(T3),2(T4)and 3(T5)treatments.The results showed that compared with CK treatment,T3,T4 and T5 treatments could significantly increase the yield,biomass and improve agronomic traits of winter oilseed rape,especially T3 treatment had the best effect.Compared with T1 treatment,the fertiliser treatment could improve the growth index and oil content of winter oilseed rape.The average contents of high oleic acid and linoleic acid of T3,T4 and T5 treatments were 9.9％and 3.6％higher than CK treatment.Considering the yield,nutrient uptake,quality and economic benefits of winter oilseed rape indicators,the T3 and T4 treatments were the most effective among the different seeding treatments after rice,i.e.,in the Jianghan Plain,the optimal period for aerial seeding oilseed rape after the harvest of mid-season rice was from the end of September to the middle of October,which could increase yield,quality and benefits.
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