To explore the effect of organic and inorganic nitrogen on yield and quality of high erucic acid rape-seed,we studied the effects of 6 different treatments(pure organic fertilizer,pure inorganic fertilizer,20%,30%,40%,and 50%organic fertilizer substitution)on yield,quality,soil nutrients,and economic benefits of high erucic acid industrial rapeseed(cv Mianyou 309).The results showed that compared with pure chemical fertilizer,a cer-tain proportion of organic and inorganic nitrogen could significantly increase rapeseed yield.The yield of 30%or-ganic nitrogen treatment was the highest,reaching 3501.63 kg/hm2,which was 24.84%higher than that of pure or-ganic fertilizer and 23.47%higher than that of pure inorganic fertilizer.Combination of organic and inorganic nitro-gen promoted the growth and development of the main stem and branches of rapeseed.Under this treatment,the eru-cic acid content was not affected but the oil content was also increased,so as to significantly increase the erucic ac-id and edible oil yield per unit area.It also increased the soil nitrogen storage,so that the soil might maintain a high-er fertility level for higher economic and environmental benefits.
high erucic acid rapeseedcombined application of organic and inorganic nitrogeninorganic ni-trogeneconomic benefit
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