氮磷调控对高芥酸油菜产量和品质的影响.

[Objectives] This experiment aimed to investigate the yield and quality of high erucic acid rape under different nitrogen and phosphorus fertilizer interactions, in order to identify nitrogen and phosphorus fertilizer application treatments that were suitable for stable yield and quality improvement of high erucic acid rape varieties. [Methods] This experiment using high erucic acid rape‘Mianyou 309'as the material, set up 4 nitrogen fertilizer levels (N0:0 kg·hm-2, N1:60 kg·hm-2, N2:120 kg·hm-2, N3:180 kg·hm-2) and 4 phosphorus fertilizer levels (P0:0 kg·hm-2, P1:45 kg·hm-2, P2:90 kg·hm-2, P3:120 kg·hm-2), totaling 16 treatments. This experiment was conducted to compare the effects of different nitrogen and phosphorus interactions on the yield and quality of high erucic acid rape. [Results] The application amount of nitrogen and phosphorus fertilizer affected the number of pods, seeds per pod and thousand seed weight per plant, thereby affecting the yield of rape. The yield reached its maximum value under N3P2 treatment in 2020 and 2021, with a maximum value of 2 848.7 kg·hm-2 in 2020, an increase of 206.5% compared with the minimum value of 929.4 kg·hm-2. The maximum value in 2021 was 2 908.3 kg·hm-2, which was 213.6% higher than the minimum value of 927.4 kg·hm-2. Under N3P2 treatment, the measured yield of rape oil in 2020 and 2021 reached the maximum of 1 144.0 and 1 353.1 kg·hm-2, and the maximum erucic acid yield was 582.5 and 685.8 kg·hm-2, respectively. Nitrogen fertilizer significantly affected the oil content of high erucic acid rape, with the highest oil content (41%-42%) under N2 conditions for two years. Nitrogen and phosphorus fertilizers significantly affected the content of erucic acid, reaching the maximum value under N2P2 treatment for two years, with a maximum value of 55.0%. [Conclusions] Reasonable application of nitrogen and phosphorus fertilizers could significantly improve the yield and quality of rape, achieving the goal of increasing yield and income.‘Mianyou 309', as a rape processed with erucic acid, could achieve higher yield and better quality by applying nitrogen 180 kg·hm-2 and phosphorus 90 kg·hm-2. [ABSTRACT FROM AUTHOR]