Effects of Combined Application of Organic and Inorganic Fertilizers on Yield and Quality of Rapeseed in Sichuan
In order to achieve high quality and high yield of rapeseed,different schemes of organic and inorganic nitrogen fertilizer were set up in this experiment for providing theoretical basis for reasonable fertilization system of oil-rice rotation mode in Sichuan area.In this study,Mianyou 309 was used as the test material from 2020 to 2022.Five treatments of Y1 to Y5(replacement amount of organic fertilizer was 20％,30％,40％,50％and 0％,respectively)were set up in rape season to analyze the changes of rape yield,yield components,grain quality and economic benefits.The results showed that,organic and inorganic fertilizer application had significant effects on the number of main inflorescence grains,yield and its components,and the increase effect and economic benefit of rapeseed were the best with Y2 treatment.The combined application of organic fertilizer could increase the contents of erucic acid and glucosinolates,which had a tendency to increase the oil content of Mianyou 309.The contents of beneficial component of the Y1,Y2 and Y3 treatments such as linolenic acid and arachidonic acid were increased.
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