采用等氮量原则和土壤盆栽试验方法,对比研究了追施沼液配方肥和无机复混肥对油菜生长、品质及氮素利用的影响.结果表明:沼液配方肥的肥效明显优于无机复混肥.在等施氮量条件下,与无机复混肥各处理相比,施用沼液配方肥的处理A3油菜干物重达最高值,为17.10 g/pot.在品质方面,等施氮量条件下,施用沼液配方肥的处理A1、A2、A3和A4与无机复混肥的处理B1、B2、B3和B4相比,硝酸盐含量分别降低了38.85％、44.83％、52.97％、49.08％；Vc含量分别增加24.31％、35.80％、39.08％、33.77％；还原糖含量分别增加6.81％、15.67％、21.32％、7.73％；同时氮肥利用率分别增加47.29％、49.82％、59.90％、34.39％.%A pot experiment was conducted to compare the effects of applying biogas slurry-based and inorganic compound fertilizers on the yield, quality and nitrogen use efficiency of rape with equivalent nutrient principles. The results showed that,the highest dry weight of the rape in biogas slurry-based fertilizer applying group reached 17. 10 g/pot(Pot size: inside diameter 19 cm, height 18 cm) , which was obviously superior to the application of inorganic compound fertilizer. And the rape nitrate contents of different treatments decreased by 38. 85%" 44. 83%,52. 97%,49. 08%, respectively. Vc content increased by 24. 31% ,35. 80% ,39. 08% , 33.77%, respectively, and reducing sugar increased by 6. 81 %, 15. 67% ,21. 32% ,7. 73% , respectively. Furthermore, the nitrogen use efficiency of rape were 47. 29%,49. 82%,59. 90%, 34. 39% respectively applying biogas slurry-based A1,A2,A3,A4 in contrast to the application of inorganic compound fertilizer B1,B2,B3"B4. In summary, biogas slurry-based fertilizer performed better in the aspects of yield, quality and nitrogen use efficiency compared with inorganic compound fertilizers.
展开▼
